SO 8 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM,
S. SALSOLA L
6. MYOSUBUS L
1. Myosuras lepturas (A. Gray) Howell. Mousetail. Plains at east entrance, Umbach, Annual, 3 to 10 cm. high, glabrous; leaves basal, threadlike, 2 to 4 cm.
long; stems 1-flowered; sepals 5, spurred at the top, about 2 mm. long; petals greenish yellow, very small; fruit a slender spike of small beaked acheneer.
7. BATBACHIUM S. F. Gray. Water buttercup.
Perennials, growing in water; stems branched, very leafy; leaves much divided into threadlike lobes; flowers small, solitary; petals 5, white; fruit a head of small
wrinkled achenes.
Petals broadly obovate, 5 to 7 mm. long; stamens numerous 1. B. flaccldum.
Petals oblong-obovate, 3 to 5 mm. long; stamens 5 to 12 2. B. drouetii.
1. Batrachlum flaccldum (Pers.) Rupr. Snyder Lake and Swiftcurrent Creek.
Wash, to Calif., N. C., and Lab.—Stems slender, glabrous; leaves 1.5 to 3 cm. long;
achenes finely hairy.
2. Batrachlum drouetii (Schultz) Nyman. Frequent in ponds and pools. Widely distributed in N. Amer., Eur., and Asia.—Plants slender, glabrous; leaves 1 to 2
cm. long; head of achenes globose, 4 mm. thick.
The species of this genus are not well understood, and the differences between them are imperfectly distinguishable.
8. HA1ERPESTES Greene.
1. Halerpestes cymbalaria (Pursh) Greene. Alkali buttercup. Frequent about east entrance in low places on prairie, sometimes in alkaline spots. Alaska to Calif.,
N. Mex., N. J., and Lab.; also in Mex. and S. Amer. (Ranunculus cymbalaria Pursh.)—Perennial with long slender runners; leaves heart-shaped or kidney-shaped»
glabrous, 0.5 to 3 cm. long, with low rounded teeth; flower stems 2 to 10 cm. long, 1 to 7-flowered; petals 3 to 5 mm. long, yellow; fruit heads longer than broad.
9. RANUNCULUS L. Buttercup,
Perennials with fleshy-fibrous roots; leaves entire, toothed, or compound; flowers solitary or in cymes; sepals 5; petals 5, yellow; fruit a head of achenes.
Leaves all entire .* 1. B. reptans.
Leaves toothed, lobed, or divided.
Plants creeping, the stems rooting at the joints, growing on mud or at the edge of water 2. B. purshil.
Plants not creeping and rooting at the joints.
Lowest leaves compound, divided into 3 or more leaflets.
Stems glabrous 3. B. oreganus.
Stems tfery hairy 4. B. macounii.
Lowest leaves toothed or lobed but never divided to the base.
Achenes with a hooked beak. Stems with long spreading hairs.
&. B. bongardi.
Achenes with a straight beak or none.
Achenes finely hairy; lowest leaves with rounded teeth, not lobed.
6. B. inamoenus.
Achenes glabrous; lowest leaves lobed.
Petals 5 to 6 mm. long 7. B. alpeophilus.
Petals 8 to 12 mm. long.
Head of achenes somewhat oblong, longer than broad . . 8. R. saxicola.
Head of achenes globose 9. B. suksdorfll.
342 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM
1. Ranunculus reptans L. Creeping buttercup. Frequent at low altitudes, in mud or sand along streams and lakes; also abundant on wet slopes at Swiftcurrent Pass. Alaska to N, Mex., N. J., and Lab.—Stems creeping, slender, glabrous, 5 to 30 cm. long; leaves linear to oblanceolate, 1 to 3 cm. long; petals 2 to 4 mm. long;
fruit heads globose.*
2. Ranunculus purshli Richard8. Occasional on the east slope at low altitudes, about pools or along streams. Alaska to Colo., Ont., and N. S. (R. limosus Nutt.)—
Stems glabrous or hairy; leaves 1 to 2 cm. wide, deeply lobed, the lobes narrow;
petals 4 to 5 mm. long; fruit heads globose, about 5 mm. long.
The typical form is glabrous; the liairy form is i?. limosus Nutt., but there seem to be no constant differences between the two. Both are found in the park.
r
3. Ranunculus oreganus (A. Gray) Howell. Wooded swamp below Lake McDer- mott. Wash, and Oreg. to Mont.—Stems stout, 20 to 50 cm. high; leaflets deeply lobed and toothed; petals 5 to 7 mm. long; achenes glabrous.
4. Ranunculus macounii Brit ton. Occasional at low and sometimes at middle altitudes, in wet woods or thickets or about pools on prairie. B. C. to N. Mex., Iowa, and Ont.—Stems 20 to 60 cm, long, erect or decumbent, branched; leaflets hairy, lobed and toothed, 3 to 8 cm. long; petals 5 to 7 mm. long; fruit heads globose.
5. Ranunculus bongardi Greene. Frequent at low and sometimes at middle altitudes, in moist woods or thickets. Alaska to Oreg. and Colo.—Stems erect, 30 to 60 cm. high; lower leaves 3 to 10 cm. wide, deeply lobed and toothed; petals slightly longer than the sepals; achenes flattened, sometimes hairy when young.
6. Ranunculus inamoenus Greene. East slope at low altitudes, on open hillsides or along streams; scarce. Idaho and Mont, to N. Mex.—Stems stout, 20 1o 30 cm, high; basal leaves rounded or fan-shaped, toothed, or some of them lobed, the upper leaves deeply lobed; petals 5 to 6 mm. long; head of achenes oblong.
7. Ranunculus alpeophilus A. Ncls. Frequent above timber line, in meadows or on rocky slopes or rock slides. Idaho and Mont, to Colo.—Stems 10 to 30 cm. high, glabrous, mostly 1-flowered;,leaves 1.5 to 4 cm. wide, deeply lobed, the lobes obtuse;
head of achenes oblong.
8. Ranunculus saxlcola Rydb. Occasional on rocky slopes above timber line.
Alta. to Wyo. and Utah. (R. ramulosus Jones).—Stems glabrous, 10 to 15 cm. high;
lower leaves 2 to 4 cm, wide, lobed, the lobes usually acutish; stem 1 raves often lobed to the base, the lobes narrow.
9. Ranunculus suksdorfli A. Gray. On moist cliffs at Cracker Lake. Wash, to Alta. and Mont.—Stems glabrous, about 10 cm. high, usually 1-flowered; basal leaves 1.5 to 3 cm. wide, lobed, the lobes acutish; stem leaves 3 or 5-cleft, with narrow lobes.
The last three species are closely related, and it is doubtful whether they are dis- tinct. They are showy plants which are often abundant and conspicuous in alpine localities, frequently flowering up to the very edges of the snow banks.
10. THAUCTRUM L. Meadow-rue.
Tall perennials with-rootstocks and yellow roots, glabrous or nearly so; leaves com- posed of numerous broad, toothed or lobed, stalked leaflets; petioles with dilated sheathing bases; flowers greenish; sepals 4 or 5; petals none; stamens numerous,
long and conspicuous; fruit of several ribbed achenes.
Achenes less than 3 times as long as broad, 2.5 to 3.5 mm. wide . 1. T. megacarpum.
Achenes about 4 times as long as broad, 2 mm. wide S. T. occidental.
1. Thallctrum megacarpum Torr. Common nearly everywhere except on prairie and at the highest altitudes, usually in moist woods or thickets, sometimes in meadows or on open slopes. Idaho and Mont, to Colo.—Stems 30 to 80 cm. high; leaflets thin, 1.5 to 6 cm. wide, pale beneath; achenes 6 to 8 mm. long.
STANDLEY—FLORA OF GLACIER PARK 343
The leaves are graceful and handsome, and in a vague way suggest those of the maidenhair fern, with which the plant is frequently confused in the West; in autumn they turn yellow. The flowers are not conspicuous. Our material is rather variable, and some of it might be referred to T. co lumbianum Rydb.
2. Thalictrum occidentals A. Gray. Avalanche Lake, on brushy slopes. B. G.
to Calif., Utah, and Alta.—Stems 50 to 80 cm. high; leaflets 1.5 to 5.5 cm. wide, 3-lobed and with rounded teeth; achenes 6 to 8 mm. long.
11. PTTLSATILLA Adans.
Perennial herbs; leaves borne at the base of the stem, divided into numerous narrow lobes; stem bearing 3 whorled bracts similar to the leaves; flowers usually 1 to a stem, with 5 to 7 colored sepals and no petals; fruit of numerous achenes, each with a long hairy tail.
Flowers purple or bluish; bracts sessile 1. P. ludoviciana.
Flowers white, sometimes tinged with purple; bracts short-stalked.
2. P. occidentalis.
1. Pulsatilla ludoviciana (Nutt.) Heller. Pasque-flower. Frequent on the east slope at low altitudes, on prairie or open hillsides. B. C. and Wash, to Tex. and 111.—Stems 10 to 40 cm. high; leaves very hairy, 6 to 10 cm. long; sepals ovate- oblong, 2.5 to 3.5 cm. long.
The plants bloom in spring.
2. Pulsatilla occidentalis (S. Wats.) Freyn. Chalice-flower, Frequent in a few places above timber line, in low meadows; also at Grinnell Lake. Alaska to Calif., Mont., and Alta. (Anemone occidentalis S. Wats.)—Stems short at flowering time, but becoming 30 to 60 cm. high; leaves 3-parted, the divisions pinnately divided into numerous lobes, green, thinly hairy; sepals 2 to 2.5 cm. long; tails of the fruit silky, bent downward in fntit, the head of fruit broad above and narrow below.
The plants bloom early, but they are very handsome even in fruit. The soft, silky heads are most attractive.
12. ANEMONE L. Anemone.
Perennials,with rootstocks; leaves basal, deeply lobed or parted; stem bearing 3 leaflike bracts; flowers few or solitary; sepals 4 or more, usually 5, petal-like; petals none; fruit a head of woolly achenes.
Leaves divided into 3 broad wedge-shaped leaflets, these toothed or with few short broad lobes . 1. A. parviflora.
Leaves 2 to 4 times divided into numerous narrow lobes.
Leaves nearly glabrous, the lobes obtuse; style 2 to 3 mm. long . 2. A. tetonensis.
Leaves hairy, the lobes acute; style 1 to 2 mm. long 3. A. globosa.
1. Anemone parviflora Michx. Northern anemone. Frequent above timber line, in meadows or on rocky slopes; also in cold bog below Lake McDermott. Alaska to Colo.. Ont., and Lab.; also in Asia.—Stems slender, 5 to 20 cm. high; 1-flowered;
leaflets 1 to 2 cm. long, thinly hairy beneath; sepals 8 to 12 mm. long, white or tinged with blue.
2. Anemone tetonensis Porter. Alpine anemone. Frequent above timber line, in meadows and on rock slides. B. C. and Wash, to Wyo. and Alta.—Stems 10 to 20 cm. high, mostly 1-flowered; leaves 1.5 to 3 cm. long; sepals 6 to 12. mm. long, bluish white or pale blue; fruit heads 1 to 1.5 cm. long.
3. Anemone globosa Nutt. Common western anemone. Common al ove timber line, in meadows or on rock slides; sometimes at low or middle elevations, in meadows or thickets. Alaska to Calif., N. Mex., and S. Dak.—Stems 15 to 40 cm. high, hairy,
1 to 3-flowered; leaves 3 to 5 cm. long; sepals 6 to 12 mm. long, yellowish within, blue or purplish outside; fruit heads about I cm. in diameter.
344 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM.
32. BERBERIDACEAE. Barberry Family.