New plants from Sinaloa

September

PROCEEDINGS

OFTHE

BIOLOGICAL SOCIETY OF WASHINGTON

NEW PLANTS FROM SINALOA.

BY

S. F.

BLAKE.

The

_following

new

_{species ofplants}

have been found

in

a

col- lection

from the

District of

San

Ignacio, Sinaloa,

Mexico, made by ^{Senor Antonio E. Salazar under the}

direction ofSefior

Jesus G.

_Ortega,

head

of

the Department

of Agriculture,

Department

ofSinaloa

and _Nayarit. This

collection

has

_recently

been

sent to the

U.

S.

Department

^of

Agriculture

^for

determination.

Polygala sinaloae, sp.nov.

Slender annual;stemssolitary, erector ascending, sparsely branched, ^1.1 to 1.6 dm. _high, 5-angulate, papillose-roughened

on

the _angles, glabrous;

leaves remote,whorledtomiddleofstemor higher, thetwolowestwhorls in2'sor_3's,ovaltoelliptic,acuteor cuspidulate,cuneateat_base,6to12

mm.

long including the shortpetiole;oneortwo

median

whorlsin5's,the blades elliptic-linear, acuminate at each _end, cuspidulate, glabrous, papillose- roughened onmargin, subsessile, ¹ to 1.8cm. long, 1.5 to 2.5

mm.

_wide;

thoseofthe branchletsmostlyscattered,linear,subulate-tipped, 4^to8

mm.

long;peduncles ^{1 to}2 cm. _long;racemes cylindric or conic, acute, rather loosely flowered,5

mm.

thick,theaxisbecoming^{1 to 2.5}cm._long;bracts ovate, attenuate-tipped, deciduous, ¹

mm.

long; pedicels 0.8

mm.

_long;

flowers magenta-pink; upper sepal broadly oval, obtusely apiculate, ^1- nerved, sparselystipitate-glandular-ciliate, ¹ to 1.2

mm.

_long;lower_sepals ovate, acuteoracuminate, sparselystipitate-glandular-ciliate, 0.8 to¹

mm.

long;wingsobovate,roundedatapex,3-nerved,2.8

mm.

long, 1.4

mm.

_wide;

keel2

mm.

long, thecrest of4pairs of lobes,theuppermostshort,adnate, emarginate, the 3 lower linear,papillose; upperpetalsoblong-ovate, trun- cate,4-veined, 2.2

mm.

long;capsuleoval, obtuse, ^1.7

mm.

_{long, 1.4}

mm.

wide; seedellipsoid,pubescent,^1.6

mm.

_long;aril1

mm.

long,thetwolobes oblong.

Type

^{intheU.S. National} Herbarium,no. 1,011,733, collected in

damp

places at

an

altitude of950_meters,

Quebrada

^delaMojonera,

San

_Ignacio,

Sinaloa,Mexico,February 19,1919,

by

^{A.E. Salazar}(no.782).

39—

Pboc.Biol. Soc.Wash., Vol.32,1919. (189)

Most

closely related toP. asperuloidesH._{B. K.,}of

Guatemala and

Brit- ishHonduras, from whichitdiffers initslargermagenta-pink^flowers

and

longerpedicels.

Parsonsia blepharophylla, sp.nov.

Herbaceous,^3.5

dm.

_highormore; stemslender, terete, grayish,densely hispidulouswithslightly retrorse hairs,the divergentbranchesalsosparsely hispidwith ascendingbrownishhairs;leaves_opposite,the blades2.2to 4.5 cm._long, 1to1.3 cm.wide, lanceolate to lance-ovate,acuminate, rounded orsubcordate

and

_{usuallyunequal}at base, firm, entire,feather-veinedwith 6 to 8_{pairs of} prominulouslateral veins, above _{pale green,} tuberculate- hispidulouswith _spreadinghairs and_{sparselyhispid} withincurved tuber- culate-based hairs, toward margin hispid-ciliate, beneath _{scarcely paler} green,tuberculate-hispidulous

and

along nerveshispid; petioles ¹to2

mm.

long, hispidulous

and

_{sparsely hispid;} branch leaves smaller; flowers in racemesof10to12toward endsofbranches

and

stem; bracts ovate, rather crowded, 6^to13

mm.

long; pedicels denselyhispidulous, ¹ to2

mm.

long;

calyx25to28

mm.

long,nearlytubular,short-calcarate (spur¹

mm.

_long),

slightly swollen above, 12-nerved, purplish-tinged,rather densely hispid with_purplishhairs

and

hispidulous withshortwhite_{spreadinghairs, gla-} brous within below the stamens; petals 6, deep ^red with purplish-black basal_spot,the 2upperoval, 11

mm.

long,8

mm.

wide, the 4 lower 3^to6

mm.

long; stamens_11, insertedabout

%

the length^ofthe calyxabovethe base (the2 dorsal epipetalous slightly lower down), the episepalous ones exserted,the 2 dorsal episepalous shorter

and

purplish-beardedespecially at apex; ovary glabrous, 16-ovulate; style glabrous,exserted; disk _short, thick, bisulcate, revolute.

Type

^{intheU.S. National}Herbarium, no. 1,011,732, collectedon road from Ixtagua ^to

Agua

^Fria,

San

Ignacio, Sinaloa, Mexico, ^altitude 340 meters,January20, 1919,

by

^{A.E. Salazar(no.}698).

This _{species belongs} to series 3 of the subsection

Lophostomum

^of Koehne's monograph,

and

isdistinguishedfrom Cuphea ^bilimekiiKoehne,

its nearest _relative,

by

^its densely hispidulous stem and _{pedicels, longer} calyx,

and

larger petals.

Piptothrix sinaloae, sp. nov.

Shrub,^{0.5to 0.8}m.high; branchletslender, terete,fuscous-brown, rather densely incurved-pubescent withseveral-celled hairs;leaves_opposite, the blades 5to 5.5cm._long,2to 3.2cm._{wide,ovate,acuminate,}

and somewhat

falcate, roundedtocuneate-rounded at base, broadestin thelower _third, serratewithabout 11 pairs ofmucronulateteeth betweentheentirebase

and

apex, papyraceous, 3-nerved, prominulous-reticulate beneath, above dull green, evenlybut not_denselyshort-pubescentwith_spreadingseveral- celled glandular-tuberculate-based hairs, beneath _{paler green, similarly} short-pubescentchieflyalong the veins

and

veinlets, densely gland-dotted^; petioles2to3

mm.

_long,similarlypubescent; panicleterminal,rounded, 4 cm. _long, 5cm._wide,densely short-pubescentwith

more

orlessspreading

Blake — New Plants from

^Sinaloa.

¹⁹¹

glandular-basedhairs;pedicels 2

mm.

long^orless;heads8-flowered, slender, 4

mm.

high; involucre 2

mm.

high, the _phyllariesabout 7,

somewhat

un- equal, linear, acutish, siccate, not _distinctly nerved, gland-dotted

and

sparsely puberulous;^corollas white, glabrous, 2.7

mm.

_long,withslender tube (O.S

mm.

long),funnelform _throat,

and

_{triangular spreading teeth;}

styles creamy; ^achenes 5-angled, whitish, sparsely puberulous, ^1.3

mm.

long; pappus^ofabout 15 _fragile upwardlyspinulose unequal

awns

0.6to 2

mm.

_long.

Type

^{intheU.S.National}Herbarium,no. 1,011,731, collected inshady, sheltered places, Sierra del Mineraldel Tominil, District of

San

_Ignacio,

Sinaloa, Mexico, ^altitude 1,500 meters,

November

17, 1918,

by

^{A. E.}

Salazar _{(no. 75).}

DistinguishedfromP.pubens^A.Gray, the only other describedspecies with pubescent stem

and

branches,

by

^{its 8-flowered} (not 11-flowered) heads,and

by

the sparsepubescence^ofthelower surfaceoftheleaves.

Perymenium

stenophyllum, sp. nov.

Frutescent; branches veryslender, gray, quadrangular, striate,sparsely strigoseandstrigillose,glabrescent; leavesopposite,the blades3 to 10cm.

long, ¹ to 3.5

mm.

wide, narrowly linear, acuminate at both ends, firm, revolute,1-nerved,above darkgreen, strigoseandstrigillosewith

somewhat

tuberculate-based hairs, beneath_strigose oncosta, betweenthe costa

and

the margin densely canescent-tomentulose with crisped hairs; petioles strigillose, ¹ to2

mm.

long;headsabout8

mm.

wide,ⁱⁿ terminal clusters of3to_7;pedicelsslenderstriate, strigillose,3to20

mm.

long; diskhemis- pheric,4 to5

mm.

high,4 to6

mm.

thick;involucre_4-seriate, graduated, 4 to 5

mm.

_high, ^the outermost _phyllaries

much

smaller, ovate, obtuse, indurated,with_obscurelyherbaceoustip,strigillose, ciliate,the inner ones ovaltooblong-oval, rounded, obscurely herbaceous-tipped, strigillose

and

ciliate; corollasnot_seen; pales acute, strigilloseonkeel, 4

mm.

_{long; ray}

achenestrigonous, wingless, blackish, cross-striate,strigillose

on

the_angles, 2.5

mm.

long;diskachenes_similar,biconvex, 2

mm.

long;pappus^ofabout 20stoutish strigillose-ciliatedeciduous awns, those on_{the angles} 1.3

mm.

long,the others subequal, ^0.8

mm.

long.

Type

^{in theU. S. National} Herbarium, no. 1,010,062, collected in cal- careoussoil,District of

San

Ignacio, Sinaloa, Mexico, August20, 1918,

by

A. E. Salazar_(no.501).

This very distinct species ^is easily recognized

by

^its narrowly ^linear leaves, densely canescent-tomentulous beneath.

Verbesina _{ortegae, sp.} nov.

Frutescent;branches _greenish, striate,rather sparsely strigillose;leaves alternate,the blades 7to10 cm. long, 1.5 to 2.5cm. _wide,elliptic-lanceo- late,serrulatewithabout11 pairs ofdepressedmucronulateteeth,feather- veined (lateral veins about 9 _pairs, translucent), not reticulate,

mem-

branaceous,above deep green,rather sparselystrigillose,smooth, beneath

duller green,inconspicuously

and

rather sparselystrigillose;petiolesnaked, not auriculate or decurrent, strigillose, 2 to 10 mrn. _long; heads 6

mm.

wide,

numerous

indense terminal

and

subterminalflattishpanicles 3 to 3.5 cm. wide, these

somewhat

surpassing the leaves; pedicelsdensely ascend- ing-puberulous, 3 ^to 7

mm.

long; disk obovoid-oblong, 5 ^{to 7}

mm.

high, 2.5 to 3.5

mm.

thick;involucre_3-seriate,graduated, 3^{to 3.5}

mm.

_high,the phyllaries narrowly oblong, rounded, indurated, 3-vittate, with thinner obscurely herbaceoustip,appressed,white-ciliolate

and

_slightlystrigillose;

rays about _{5, yellow, quadrate,} fertile, unequally tridentate, 2

mm.

_long

and

_wide;disk corollasabout20,yellow,sparselypiloseontheobscure tube, 3

mm.

long (tubeabout0.7mm.);palesobtuse, pubescentdorsally,^ciliate above,^4.5

mm.

long;diskachenes cuneate-obovate,blackish,verysparsely strigillose, 3.3

mm.

long, narrowly winged below, the wings

somewhat

broadened above and adnatetothebaseoftheawns;

awns

2,slender,un- equal, sparselystrigillose, 1.5to 2.5

mm.

long.

Type

^{in the U. S. National Herbarium,} no. 1,010,064, collected inthe vicinity of

San

Ignacio, Sinaloa, Mexico, 1918-1919,

by

A. E. Salazar_(no.

662).

This _species belongs ⁱⁿ the section Saubinetia, next ^to V. abscondita Klatt

and

V. perymenioides Sch. Bip. Itisdistinguishedfromthefirst

by

its thin, smooth, merely strigillose leaves,

and

from the second

by

^its smaller_panicles

and by

having^itsleavesstrigillose,notloosely pilosulous, beneath.

The

species^is

named

in honorof SefiorJesusGonzales_Ortega,

Head

of the

Department

^ofAgriculture in Sinaloa, underwhosedirection these collections were made.

Otopappussalazari, sp. nov.

Scandent shrub; branchlets slender, grayish, striate, strigillose; leaves opposite,the blades9.5 to12cm.long, 2.5 to4cm.wide, lance-ovate,long- acuminate, oftenfalcate, atbase truncate-rounded, obscurelymucronulate- denticulatewith scatteredteeth,3-nerved

and

prominulous-reticulate be- neath, membranaceous, above deep green, evenly strigillose with _slightly tuberculate-basedhairsandslightlyroughish,beneath_slightlypaler green, strigosealongcosta,elsewhere evenlybut_sparselystrigillose^;petiolesslender, unmargined,strigillose,7to 11

mm.

_long;heads12to15

mm.

wide,about 13ina terminal ternately arranged panicle^6.5cm._{wide;pedicels}strigillose, 1to 1.7cm._long; bractsminute;disk hemispheric, 8^to10

mm.

high, 7 to 10

mm.

thick;involucre_5-seriate,graduated, 4^{to 4.5}

mm.

_high, the_phyll- ariesovaloroblong-oval, obtuse, indurated,with _obscurelysubherbaceous midline

and

slightlyspreading apex,strigillosechieflyalongmidline,ciliate, theoutermostoblong-spatulateandsubherbaceous, spreading; raysabout10, oval, yellow, fertile, 4.5

mm.

long; disk corollas yellow, glabrous, 4.5 to 5

mm.

_{long (tube} slender, 1.5 to 1.8mm.);pales acute, spinulose-ciliolate onkeel

and

_{margin, 6}

mm.

long;ray achenes trigonous, rather narrowly winged, the wings broadened above

and

adnate tothe

awns

_throughout

theirlength;

awns

3,the inner one1.5

mm.

long, thetwoouterabout0.5

Blake — New Plants from

^Sinaloa.

¹⁹³ mm.

long,^allconnectedatbase

by

^thelaceratecorona, the^latterabout0.5

mm.

long;diskachenes strongly compressed, glabrous except^forthe spinu- lose-ciliolate wings, 3

mm.

long, narrowly winged, the wings broadened aboveand adnate tothe

awns

_throughout theirlength; inner

awn

2

mm.

long,theouter1

mm.

_{long;squamellae}about_6,unitedatbaseintoalacer- ate corona, 0.4

mm.

_long.

Type

^{in the U. S. National Herbarium, no.} 1,010,063, collected at Ixtagua, District of

San

Ignacio, Sinaloa, Mexico, August 12, 1918,

by

A. E. Salazar (no.450).

Otopappus^salazariiseasilydistinguished

by

^itsradiate heads, longpedi- cels, and_evenly strigilloseleaves.