Spikelets several to many-flowered, the florets crowded, almost horizontal;
glumes and lemmas broad, subchartaceous, the margins scarious; palea much smaller than its lemma.
Plants annual. Spikelets triangular-ovate, 4 to 5 mm. long, in a loose open panicle 1. B. minor.
Plants perennial.
Spikelets oblong or elliptic, 2 to 3 mm. long, in an open nodding panicle.
2. B. mandoniana.
Spikelets nearly orbicular, 4 to 5 mm, wide, in a narrow rather strict panicle.
3. B, strlcta.
1. Briza minor L. Sp. PI. 70. 1753.
A weak-stemmed annual 30 to 50 cm. tall, with thin flat scabrous blades and loosely flowered panicles, the branciilets subcapillary but stiffly spreading, the spikelets triangular-ovate, nodding.
Open ground, sparingly Introduced in America. Originally described from Europe.
ECUADOR: Quito, Harteman 52; Arcade 3. Rlobamba, Mille 274.
Peru: Lima, Hitchcock 22427.
2. Briza mandoniana (Grlseb.) Henr. Med. Rijks Herb. Leiden 40: 70. 1921.
Calotheca stricta var. mandoniana Grlseb. Abh. Ges. Wiss. Gottlngen 24: 289.
1879.
Poa monandra Hack. Oesterr. Bot. Zeitschr. 52: 376. 1902.
Briza Uttoi Parodi, Univ. Nac. Buenos Aires, Rev. Agron. 3: 133. f. 6\ 7\ 1920.
Briza mandoniana var. tuberculata Henr. Med. Rijks Herb. Leiden 40: 71.
1921. (Mandon 1355 in part.)
Briza mandoniana var. herzogiana Henr. Med, Rijks Herb. Leiden 40: 71.
1921. {Herzog 3017.)
Briza mandoniana var. vallegranden»is Henr. Med. Rijks Herb. Leiden 40: 71.
1921. (Vallegrande, Bolivia, Herzog 1879.)
A slender delicate erect perennial 20 to 60 cm. tall, with flat, mostly basal blades, and loose nodding panicles 5 to 10 cm. long, the branches few, capillary, few-flowered, naked below; spikelets ovate, not very turgid, sometimes tuber- eulate, about 5 mm. long; aspect that of a species of Poa. The Huardn speci- men (Macbride <& Featherstone 1154) cited below differs in having condensed panicles and stouter culms.
Paramos, wooded slopes, and moist cliffs, Colombia to Argentina. Origi- nally described from Bolivia. (Type, Mandon 1356.)
Eouadob; Tulc&n, Hitchcock 21041. Quito, Harteman 25, 42; Mille 276;
Hoilcan 953; Sodiro; Jameson 779 (Kew Herb.). Mount Chimborazo, Hitch- eoch 21948%. BaSos, Hitchcock 21909. Between Ofia and Cuenca, Hitchcock 21628, 21639. Between La Toma and Loja, Hitchcock 21384, 21430. Between San Lucas and Ofia, Hitchcock 21531. Between Loja and San Lucas, Hitchcock 21462, 21487.
Peru: Huar6n, Macbride & Feather stone 1154. Mlto, Macbride & Feather- stone 1433, 1728; Macbride 3316. Chachapoyas, Mat hews 3237 (Kew Herb.).
Bolivia: Sorata, Rushy 238; Mandon 1355 (Kew Herb.), 1356. Pongo, Hitchcock 22773. Unduavi, lluchtien 4280. Clioquetanga, Herzog 3017. -
3. Briza strlcta (Hook. & Arn.) Steud. Nom. Bot. ed. 2. 1: 225. 1840.
Calotheca 9tricta Hook. & Arn. Bot. Beechey Voy. 50. 1841.
An erect slender cespitose perennial 40 to 80 cm. tall, with elongate slender blades and narrow, somewhat congested panicles, more or less interrupted,
HITCHCOCK—GBASSES OF CENTRAL ANDES 335
especially below, the branches erect, few-flowered, the pedicels shorter than the ovoid spikelets, these about 5 mm. long.
Sandy fields and dry slopes, Bolivia, Argentina, and Chile. Originally de- scribed from Conception, Chile.
Bolivia: Cochabamba, Hohcay, 383.
Chasoolytkuu: spicigebum, C. bufum, Calotheca MACROSTACHYA, C. eeni- foemis, C. microstachya, and Panicum poaemobphum are described by Presl as coming from the mountains of Peru (vicinity of Hu&nuco). Since these species, now referred to Brisa, have not been collected in Peru by other botanists, it may be that, as In the case of several other species described by Presl, there is an error In the locality. They may have come from Chile, where Haenke made a collection. In the list of errata Presl gives the locality of Calotheca macro- ittachya as Monterey, Calif., but no such species is known from that State.
14. ERAGROSTIS Host
Spikelets few to many-flowered, strongly compressed; glumes and lemmas keeled, the lemmas 3-nerved; rachilla often continuous with the paleas persist'
ing after the fall of the fruit.
Palea dilate oq the keels, the cilia usually as long as the width of the lemma.
Plants annual.
Panicle close and spikelike, more or less interrupted. (See also Er peruviana.) 1. E. cili&ris.
Panicle oblong or narrowly pyramidal, open.
Axis and branches not viscid, the branches rather lax 2. E. amabilis.
Axis and branches of panicle viscid, the branches stiffly spreading.
3. E. viscosa.
Palea not conspicuously ciliate on the keels.
Plants creeping, forming mats 4. E. hypnoides.
Plants not creeping.
Plants annual.
Lemmas glandular on the keel, 1 mm. wide (as folded) 5. E. cilianensis.
Lemmas not glandular, mostly less than 1 mm. wide (as folded).
Panicle elongate (as much as 40 cm.), contracted, the minute spikelets crowded or glomerate 6. E. glomerata.
Panicle not elongate and dense.
Panicles oval or oblong, dense, 1 to 5 cm. long 7. E. peruviana.
Panicles more or less open.
Blades pilose.
Spikelets sessile or nearly so; axils of branches conspicuously ' pilose; lemmas acuminate S. E, roaypurensis.
Spikelets pediceled; axils glabrous or slightly pilose; lemmas acutlsh 9. E. articulata.
Blades glabrous or pilose near base only.
Panicles dark purple, the branches implicate at maturity.
iO. E. nigricans.
Panicles green or lead color, not implicate.
Spikelets about 1 ram. wide 11. E. pilosa.
Spikelets nearly 2 mm. wide.
Panicles somewhat pilose in the axils 12. E. mexicana.
Panicles glabrous in the axils 13. E. limbata.
Plants perennial.
Panicles dense and spikelike.
Panicles 3 to 6 cm. long, attenuate or interrupted below.
14. E. weberbaueri.
336 CONTRIBUTIONS FBOM THE NATIONAL HERBARIUM
Panicles elongate.
Panicles slender, about 3 mm. wide; blades less than 10 cm. long.
15. E. attenuate*
Panicles 1 cm. wide; blades as much as 1 meter long 16. E. ten ax.
Panicles open or narrow but not dense and spikelike.
Panicles narrow, the branches appressed or ascending or. If spreading, short and closely flowered.
Branches of panicle somewhat distant, usually stiffly spreading or ascending, densely flowered, sometimes naked at base for as much as 1 cm., usually less than 5 cm. long 17. E. lurida.
Branches of panicle ascending or appressed 18. E. pastoensis.
Panicles open, sometimes diffuse.
Branches spreading, naked at base for 2 to 5 cm., rather closely flow- ered toward the end 19. E. montufari.
Branches of panicle rather evenly flowered throughout.
Culms robust, as much as 1.5 meters tall and 6 ram. thick at base.
00. E. magna.
Culms comparatively low and slender, rarely as much as 1 meter tall.
Spikelets mostly more than 8-flowered.
Lemmas somewhat remote, only slightly overlapping the next one above, the keel nearly straight 23. E. patula.
Lemmas closely Imbricate, the keel curved.
Lemmas 1.5 mm. long, 0.5 mm. wide (as folded).
22. E. expansa.
Lemmas 2 mm. long, about 1 mm. wide (as folded).
21. E. bahiensis.
Spikelets mostly 3 to 5-flowered.
Rachilla conspicuously pilose 24. E. pilgeriana.
Rachilla glabrous.
Lemmas 3 mm. long 27. E. carazensis.
Lemmas about 2 mm. long.
Sheaths and blades more or less pilose or nearly glabrous.
25. E. lugens.
Sheaths and blades strongly hirsute 26. E. polytricha.
1. Eragrostis ciliaris <L.) Link, Hort. Beroi. 1: 192. 1827.
Poa dliaris L. Syst Nat ed. 10. 2; 875. 1759.
Ah erect to prostrate annual, with slender wiry culms 10 to 40 cm. tall,.
flat blades, and dense, narrow, Interruptedly spikelike panicles 5 to 15 cm.
long.
Waste places, at low altitudes, tropics of both hemispheres. Originally described from Jamaica.
Ecuador: Oil Camp between Guayaquil and Salinas, Hitchcock 20015.
Milagro, Hitchcock 20176. Chanduy, Spruce 6431a, 6433 (both Kew Herb.).
Peru : Lima, Wilkcs Kxpl. Exped. Colonia PerenS, Hitchcock 22074. Piura»
Spruce 6431b (Kew Herb.).
Bolivia: Huachi, White 915 (Kew Herb.).
2. Eragrostis amabilis (L.) Wight & Am.; Hook. & Arn. Bot. Beechey Voy.
251. 1841.
Poa amabilis L. Bp. PI. 68. 1753.
Eraprostis plumosa Link, Hort Berol. 1: 192. 1827.
HITCHCOCK—GRASSES OP CENTRAL ANDES 337
A low, tufted, branching annual, with slender, ascending or spreading culms, linear blades, and handsome oblong panicles, the minute spikelets mostly borne along the lower side of the ascending branches.
Open ground and waste places, warmer regions of both hemispheres, at low altitudes. Originally described from India.
Ecuador: Milagro, Hitchcock 20179.
3. Eragrostis viscosa (Retz.) Trin. Mem. Acad. St. Pfitersb. VI. Math. Phys.
Nat 1: 307. 1830.
Poa viscosa Retz. Obs. Bot. 4: 20. 1786.
Differing from E. amabilis in the viscid stiffer panicles and larger spikelets.
Fields and open ground, introduced from Asia. Originally described from India.
Ecuador: Chanduy, Spitice 6432. Oil Camp between Guayaquil and Salinas.
Hitchcock 20002. Portovelo, Hitchcock 21268.
4. Eragrostis hypnoides (Lam.) B. S. P. Prel. Cat. N. Y. 09. 1888.
Poa hypnoides Lain. Tabl. Encycl. 1: 185. 1791.
Plant much-branched, spreading, forming mats, the flowering culms mostly 5 to 10 cm. tall; blades 1.5 to 2 cm. long, spreading; panicles small, more or less capitate, the pale, many-flowered spikelets commonly 1 cm. long.
Moist open ground along streams throughout the United States and south- ward to Argentina. Originally described from tropical America.
Ecuador : Milagro, Hitchcock 20168. Balao, Eggers 14558. Guayaquil, Spruce 6430 (Kew Herb.), Portovelo, Rose 23399.
Bolivia: Guanay, Rusby 230. Mapiri, Busby 243. Beni River, Rusby 227.
Reyes, White 1232.
5. Eragrostis cilianensis (All.) Link; Vign. Lnt. Malpighia 18: 386. 1904.
Poa cilianensis All. Fl. Pedem. 3: 246. 1785.
Eragrostis ma for Host, Icon. Gram. Austr. 4: 14. 1809.
Eragrostis megastachya Link, Hort. Berol. 1: 187. 1827.
Culms erect or often spreading; panicles rather compact, 2 to 10 cm. long, greenish or often whitish, the spikelets many-flowered, larger than in the other annual species; plant giving off a disagreeable odor.
A European species, introduced in America, fields and waste places. Origi- nally described from Europe.
Ecuador: Between La Toma and Loja, Hitchcock 21401. Chanduy, Spruce 6427 (Kew Herb.).
Peru : Obrajillo, Wilkes E&pl. Exped. Moquegua, W eber batter 7438.
Bolivia: Cochabamba, Hitchcock, 22844. Bolivian Plateau, Bang 1078.
Tarija, Fries 1061.
6. Eragrostis glomerata (Walt) L. H. Dewey, Contr. U, S. Nat. Herb. 2: 543.
1894.
Poa glomerata Walt. Fl. Carol. 80. 1788.
Eragrostis conferta Trin. M6m. Acad. St. P6tersb. VI. Math. Phys. Nat. 1:
409. 1830.
Robust, sometimes as much as 2 meters tall and appearing like a perennial, freely branching, the branches sometimes fascicled; blades elongate; panicles as much as 40 cm. long, narrowly contracted, densely flowered, pale, the spike- lets minute.
Moist low ground, southeastern United States to Uruguay. Originally de- scribed from South Carolina.
338 CONTRIBUTIONS FBOM THE NATIONAL HERBARIUM
Ecuador: Panig6n Plantation, Hitchcock 20570. Guayaquil, Jameson 541.
Peru: Piura, Spruce 6429 (Kew Herb.).
Bolivia : Covendo, White 915, 1000. Espfa, White 013.
7. Eragrostis peruviana (Jacq.) Trin. M$m. Acad. St. P£tersb. VI. Math.
Phys. Nat. 1: 396. 1830.
Poa pertiviana Jacq. Coll. Bot. 1: 107. 1786.
Eragrostis deserticola R. A. Phil. FI. Atac. 55. 1800.
Eragrostis peruviana var. brachythyrsa Pilger, Bot. Juhrb. Engler 37: 375.
1&06. (Weberbsncr 1402.)
A spreading pubescent annual, with decumbent culms 10 to 40 cm. tall, fiat blades, and dense, ovoid, oblong, or club-shaped panicles 1 to 5 cm. long.
Sandy soil, southern Peru and northern Chile. No locality cited with the original description. A portion of the type, presumably from Peru, is in the U. S. National Herbarium.
Peru: Chorrlllos. Macbride 5874. Lurin, Macbride 5925. Mollendo, Hitch- cock 22351; Cook <£ Gilbert 56; Rose 18980, 18981. Arequipa, Hoi way in 1920;
Cocker ell in 1925.
8. Eragrostis maypurensis (H. B. K.) Steud. Syn. PI. Glum. 1: 276. 1854.
Poa maypurensis H. B. K. Nov. Gen. & Sp. 1: 161. 1816.
Eragrostis vahtU Nees, Agrost. Bras. 499. 1829.
Eragrostis amoena Presl, Rel. Haenk. 1: 275. 1830.
Eragrostis panamensis Presl, Rel. Haenk. 1: 277. 1830.
Culms erect from a spreading base, 10 to 30 cm. tall, the narrow blades mostly near the base; panicles brownish or yellowish, narrow, the short branches somewhat distant, stiffly ascending, splkelet-bearing from the base;
spikelets linear, as much as 15 mm. long.
Open ground, especially In sandy soil, western Mexico to Brazil. Originally described from Venezuela.
Bolivia : Guanay, Rushy 192.
9. Eragrostis articulata Nees, Agrost. Bras. 502. 1829.
An erect or decumbent annual 10 to 40 cm. tall, with papillose-hispid sheaths and blades, and narrow open panicles about half the length of the entire plant, the branches ascending, the spikelets pediceled and about equally dis- tributed along the branches.
Open dry ground, Brazil to Bolivia. Originally described from Brazil.
Bolivia: Buena Vista, Steinbach 5182, G991, Charagua, Hersog 123C. Gran Chaco, Fries 1463,
Eragrostis articulata var. glabrescbns Henr. Med. Rijks Herb. Leiden 40:
69. 1921. This is based on Herzog 1309a, and is differentiated by having glabrous foliage. Doctor Henrard has kindly seut to the TJ. S, National Herbarium a spikelet from the type specimen. This spikelet is more slender and has more florets than those of E. articulata, and appears to belong to a distinct species.
10. Eragrostis xiigricans (H. B. K.) Steud. Noni. Bot. ed. 2. 1: 563. 1840.
Poa nigricans H. B. K. Nov. Gen. & Sp. 1: 159. 1816.
Eragrostis subatra Jedw. Bot. Archiv Mez 5 : 202. 1924. (Bang 80, cited as BusTfy 80.)
A spreading annual, with decumbent culms as much as 50 cm. tall, and narrow dark panicles as much as 20 cm. long, the short main branches spread- ing but rather densely flowered and more or less implicate.
Open ground, fields, and waste places, Ecuador, whence originally described, to Bolivia. (Near Quito, Bonpland.)
HITCHCOCK—GRASSES OF CENTRAL ANDES 339
Ecuadoe : Quito, Harteman 1, 44; Bodiro; Arcade 5; Hitchcock 21932;
Jameson 249 (Kew Herb ). RIobamba, Mttle 54; Spruce 5823. Ambato, Hitchcock 21742; Pachano 64. Quebrada Chalan, Anthony & Tate 441.
Peru : La Merced, Hitchcock 22130. Matucana, Macbride & Featherstone 223. OUantaytambo, Hitchcock 22551. Cuzco, Hitchcock 22497, 22498. Cha- chapoyas, Mat hews 3242 (Kew Herb.). Arequlpa, Cocker ell In 1925. Torata, Weberbauer 7405. Moquegua, Weberbauer 7447a.
Bolivia: Sorata, Holway 539. La Paz, Bang 21, 80; Buchtien 2, 562, 562a, 820, 6421. Palca, Buchtien 2535. Atocha, Asplund 6524. Oploca, Hitchcock 22889, 22928.
11. Eragrostis pilosa (L.) Beauv, Ess. Agrost. 162. 1812.
Poa pilosa L. Sp. Pl. 68. 1753.
A tufted weedy annual, pilose at the summit of the sheaths and in the axils of the lower panicle branches, otherwise glabrous; culms ascending, mostly 20 to 30 cm. tall; panicles oblong, loosely many-flowered, commonly about one-third the entire height of the plant; spikelets 4 to 6 mm. long.
Open ground, fields, and waste places, warm and temperate regions of both hemispheres. Originally described from Italy.
Ecuador: Quito, Arcade 6. Bafios, Hitchcock 21903. Alausf, Hitchcock 20690. Huigra, Hitchcock 20613, Chanduy, Spruce 6428 (Kew Herb.).
Peru: Obrajillo, Wilkes Expl. Exped. Matucana, Macbride A Featherstone 164, 225, 393, 451. Chosica, Macbride & Featherstone 551.
Bolivia : Sorata, Mandon 1329. La Paz, Buchtien 820. Cotafia, Buchtien 3135, La Florida, Hitchcock 22644. Yanacachi, Buchtien 428. Cochabamba, Buchtien 2515, 2516; Hitchcock 22804, 22846, 22867; Holicap 356, 372. Oploca,
Hitchcock 22900. Tupiza, Hitchcock 22922. Tarija, Fries 1100. Padcaya, Fiebriff 2528 (Kew Herb.).
12. Eragrostis mexicana (Lag.) Link, Hort. Berol. 1: 190. 1827.
Poa mexicana Lag, Gen. & Sp. Nov. 3. 1816.
Differing from E. pilosa in the larger spikelets, nearly 2 mm. wide.
Fields and waste places, southwestern United States to Chile. Originally described from Mexico.
Ecuadob : Guayaquil, MUle 19. Azogues, Rose 22798. Huataxi, Spruce 6092, Guaranda, Jameson 162 (Kew Herb.).
Pebu: Lurin, Macbride 5954.
Bolivia : Sirupaya, Buchtien 428 in part.
13. Eragrostis limb at a Fourn. Mex. PI. 2: 11C, 1886.
Similar to E. pilosa and E. mexicana, but the panicle erect, often purplish, and the axils glabrous.
A weed in cultivated ground or waste places. Mexico, whence originally de- scribed, to northern South America.
Pebu : Matucana, Macbride & Featherstone 224; Savatier in 1877 (Kew Herb.), Moquegua, Weberbauer 7447.
14. Eragrostis weberbauer! Pilger, Bot Jahrb. Engler 37: 375, 1906.
An erect perennial, with slender culms 20 to 80 cm. tall, slender fine-pointed blades 3 to 10 cm. long, and pale spikelike panicles 3 to 6 cm. long, interrupted below.
Rocky slopes, Peru, whence originally described. (Type, Weberbauer 3189.) Peru: Between Samanco and Garaz, Weberbauer 3189. Arequlpa, Weber- bauer 6836; Cocker ell in 1925. Matucana, Macbride d Featherstone 303, Puru- chuca, Mat hews 770 (Kew Herb.). Cotahuasl, Weberbauer 6870 (Field Mus.)*
340 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM
15. Eragrostia attenuate Hitchc., sp. nov.
A cespitose perennial; culms slender, glabrous, prostrate or ascending, 20 to 60 cm. long; sheaths glabrous or sparsely pilose, longer than the internodes, densely pilose at the throat, those of the culm 2 to 4; ligule densely pilose with hairs about 1 mm, long; blades conspicuously papillose-pilose on both surfaces, flat or those of the innovations Involute, mostly 2 to 4 cm. long, sometimes as much as 7 cm., about 1 mm. wide, rarely as much as 3 mm., mostly spreading, sharp-pointed; panicles very slender, straight or somewhat flexuous, spikelike, somewhat interrupted, purplish, as much as 40 cm. long, usually more than half the length of the entire culm, the branches short and appressed, the lower as much as 3 cm. long, usually less than 1 cm. long; spikelets mostly 3> or 4-flow- ered, about 2 mm. long, the pedicel less than 1 mm. long, tie rachtlla at maturity disarticulating between the florets; glumes narrow, unequal, the first about 1 mm. long, the second a little longer, scaberulous on the keels; first lemma some- what compressed, ovate, acutlsh, scaberulous all over the back, a little more than 1 mm. long, the lateral nerve distinct but not conspicuous, the second and third lemmas similar to the first but shorter; palea a little shorter than the lemma, minutely scaberulous on the keels; caryopsis oblong, about 0.6 mm.
long.
Type In the U. S. National Herbarium, no. 1,164,900, collected on sandy slopes of hills about three kilometers back of Mollendo, Peru, November 17, 1923, by
A. S. Hitchcock (no. 22424).
This species is distinguished by the attenuate panicles and the scaberulous lemmas. It was abundant in the type locality but no other specimens have been seen. The region around Mollendo Is a desert, and vegetation thrives only after light rains that fall at long intervals.
16. Er&grostis tenaz (H. B. K.) Steud. Norn. Bot. ed. 2. 1: 564. 1840.
Poa tenax H. B. K. Nov. Gen. & Sp. 1:160. 1860.
Eragrostis lehmannii Pllger, Bot. Jahrb. Engler 27: 32. 1899. (Lehmann 5823, cited as 5283.)
Eragrostis densissitna Hack, Oesterr. Bot. Zeitschr. 52: 304. 1902. (Tumbaco, Sodiro in 1886.)
An erect cespitose perennial 1 to 2 meters tall, with more or less pubescent sheaths, elongate narrow blades, and contracted, almost spikelike panicles as
much as 50 cm. long.
Sandy plains, Ecuador. Originally described from near Quito. (Bonpland.) Ecuador: Tumbaco and Pomasqui, Sodiro in 1886. Cotocallao, Mille 271.
Bafios, Lehmann 442a. Quito, Jameson (Kew Herb.).
17. Eragrostis lurida Presl, Itel. Haenk. 1: 270. 1830.
Eragrostis contristata Nees & Hey. Nov. Act. Acad. Caes. Leop. Carol. 10:
Suppl. 1: 81. 1841; 163. 1843. (Lake Titicaea.)
Eragrostis bahiensis var. boliviensis Henr. Med. Rijks Herb. Leiden 40: 68.
1921. (Mandon 1332.)
An erect or prostrate perennial, from a few centimeters to as much as 1 meter tall, with narrow dark panicles as much as 30 cm. long in large plants, the spikelets short-pediceled and congested along the stiffly ascending or spread- ing primary branches, these distant or sometimes contiguous, forming a dense panicle.
Fields and waste places, Ecuador to Bolivia. Originally described from Peru.
Ecuador : Quito, Sodiro. Pomasqui, Mille 273. Ambato, Rose 22334; Bitch- ooofc 21724, 21728. Alausf, Hitchcock 20691, 20713. Riobamba, Mille 52;
Spruce 5808 (Kew Herb.).
HITCHCOCK—GRASSES OF CENTRAL ANDES 341
Peru : Matucana, Macbride & Featherstone 251, 252. Tarrna, Hitchcock 22162, 22163; Macbride & Featherstone 987, OUantaytambo, Hitchcock 22486, 22518, 22519, 22554. Cuzco, Hitchcock 22463, 22500. Bauos, Wilkes Expl.
Exped.
Bolivia: La Faz, Buchtien 847; Ruzby 49. Summit between Oruro and Cochabamba, Hitchcock 22869. Sorata, Mandon 1332.
18. Eragrostis pastoensis (H. B. K.) Trin. MOni. Acad. St. Ffitersb. VI. Scl.
Nat. 2 *: 71. 1836.
Poa paatoensis H. B. K. Nov. Gen. & Sp. 1: 160, 1816.
Poa setifolia Benth. Fl. Hartw. 262. 1846.
Eragrostis contracta Pilger, Bot, Jahrb. Engler 37 : 376. 1906. (Weberbauer 2841.)
An erect or spreading, cespitose perennial, 20 to 50 cm. or as much as 1 meter tall, with erect blades, long involute-setaceous at tip, and narrow, con- tracted, almost spikelike panicles as much as 30 cm. long, long-pilose In the axils.
Dry hills and fields, Colombia, whence originally described, to Bolivia.
Ecuador : Quito, Bodiro; Mille 272; Spruce 5407 (Kew Herb.); Hart we9 1452 (Kew Herb,). Between Malchinguf and Pomasqui, Hitchcock 20697, 20902. Bafios, Hitchcock 21901. Between La Toma and Loja, Hitchcock 21407. Between Loja and San Lucas, Hitchcock 21484. Between Ofia and Cuenca, Hitchcock 21591.
Peru: Ocros, W eberbauer 2663. Ollantaytambo, Hitchcock 22522.
19. Eragrostis montufari (H. B. K.) Steud. Nom. Bot. ed. 2. 1: 563. 1840.
Poa montufari H. B. K. Nov. Gen. & Sp. 1:159, 1816.
Eragrostis buchtienii Hack. Repert. Nov. Sp. Fedde 6: 157. 1906. (Buchtien 428.)
Eragrostis boliviensis Jedw. Bot Archlv Mez 5: 205. 1824. {Mandon 1330.) An erect or spreading perennial 30 to 60 cm. tall, with more or less villous r
or sometimes glabrous sheaths, flat blades, and open panicles 10 to 25 cm.
long, the main branches spreading, distant, naked below, the spikelets appressed along the upper half.
Dry plains and slopes, Ecuador to Bolivia. Originally described from Chillo, Ecuador. (Hacienda Montufar, Bonpland.)
Ecuador: Huigra, Hitchcock 20758. Alausl, Hitchcock 20718. Between La Toma and Loja, Hitchcock 21410.
Peru: Mito, Macbride & Featherstone 1425. La Merced, Hitchcock 22131.
Tarma, Hitchcock 22150. Cuzco, Hitchcock 22490.
Bolivia : Frov. Larecaja, Mandon 1329. Hacienda Casana, Buchtien 7140.
Co tafia, Buchtien 3138. La Paz, Bang 201; Buchtien 848. La Florida, Hitch- cock 22623. Coripata, Hitchcock 22684. Coroico, Buchtien 3638. Cochabamba, Hitchcock 22798, 22835, 22861; Holuxiy 377. Sorata, Mandon 1328, 1329, 1330
(all in Kew Herb.). Without locality, Cdrdenas {Mulford Biol, Expl.) 2144.
20. Eragrostis magma Hitchc., sp. nov.
Perennial; culms cespitose in large clumps, erect, stout, glabrous, about 3-noded, 1.5 meters tall, the lower Intemodes as much as 6 mm. thick; sheaths glabrous, somewhat villous on each side at the throat; ligule a dilate line, less than 0.5 mm. long; blades elongate, flat or more or less involute, glabrous beneath, villous on the upper surface, 40 to 60 cm. long, as much as 7 mm.
wide, tapering to a fine point; panicle narrow, rather loose, 30 to 50 cm.
long, the main axis glabrous, densely villous In the axils of the main branches, more or less pilose in the axils of the branchlets, the main branches ascending,