284 LEGUMINOSA, 
SourH Mexico, Vera Cruz to Orizaba (Miller, 1691, 1749), near Guanaxuato (Hartweg, 
1598), Zimapan (Coulter), Tlacolola, Oaxaca (Andrieux, 455), Orizaba (Botteri; Jur- 
gensen, 706). Hb. Kew. 
50. Desmodium (§ Heteroloma) orizabanum, Hemsl. Diag. Pl. Nov. pars3, p. 45. 
Suffruticosum, nanum, fere omnino glaberrimum, ramis erectis vel adscendentibus teretibus graci- 
_ liusculis, foliis trifoliolatis longiuscule petiolatis nitidis, foliolis approximatis ovatis usque 
lanceolato-oblongis obtusiusculis, floribus mediocribus laxe racemosis, racemis simplicibus vel 
ramosis, bracteis puberulis lanceolatis acuminatis striatis ante anthesin deciduis, pedicellis 
sepe geminis filiformibus, legumine uncinato-hispidulo sepissime 4- vel 5-articulato leviter 
curvato, articulis dolabriformibus. . . 
Suffrutex pedalis vel sesquipedalis, fere omnino glaberrimus, ramis erectis vel adscendentibus, tere- 
tibus, graciliusculis. Folia longiuscule petiolata, membranacea, nitida, pinnatim trifoliolata ; 
foliola approximata, ovata, lanceolata vel fere oblonga, 6-24 lin. longa, obtusa, lateralia sepe 
minora, omnia petiolulata, petiolulis brevibus, supra uncinato-barbulatis ; petioli gracilis basi 
tumida, parte sub foliolis 9-18 lin. longa; stipule et stipelle subulate, valde deciduz. Flores 
rosei, mediocres, laxe racemosi; racemi simplices vel ramosi, 6-12-pollicares, ramulis gracili- 
bus ; bracteze puberule, lanceolate, acuminate, striate, ante anthesin decidue, ad 2 lin. longe ; 
pedicelli szepe gemini, filiformes, usque 6 lin. longi; calyx glaber, lobis ovatis obtusiusculis ; 
ovarium breviter stipitatum, albo-hispidulum. Legumen uncinato-hispidulum, sepissime 4- vel 
5-articulatum, leviter curvatum, 1-14 poll. longum, articulis dolabriformibus. 
Souta Mexico, region of Orizaba, Rio Blanco (Bourgeau, 2997), Cordillera of Vera 
Cruz, woods at 3000 feet (Galeotti, 3296), Orizaba (Botteri, 730). Hb. Kew. 
A distinct species, glabrous and naked, with the exception of the barbed pod. The 
terminal leaflet is relatively close to the pair below it. 
51. Desmodium (Chalarium) palmeri, Hemsl. Diag. Pl. Nov. pars 3, p. 45. 
Fruticosum vel herbaceum, caulibus graciliusculis adscendentibus infra dense foliosis, foliis trifo- 
liolatis, foliolis lanceolato-oblongis glaucis utrinque preecipue subtus appresse setulosis, floribus 
mediocribus laxe racemosis, racemis simplicibus paucifloris longe pedunculatis, pedunculis 
gracilibus, pedicellis geminis gracilibus, calycis sparsim pilosi lobis inequalibus, legumine 
flavescente uncinato-puberulo sepe 4-articulato, articulis oblique ovatis. 
Herba vel suffrutex, ramis vel caulibus graciliusculis adscendentibus (racemis inclusis sesquipoll. 
longis), tenuiter puberulis, demum glabris, fusco-purpureis, infra dense foliosis, internodiis 
circiter semipollicaribus. Folia graciliter breviterque petiolata, pinnatim trifoliolata; foliola 
(in spec. nostr. complicata et deflexa) brevissime et crassiuscule petiolulata, lanceolato-oblonga, 
9-18 lin. longa, approximata, apice apiculata, basi obtusa, utrinque sed pracipue subtus 
appresse setulosa, setulis albis, sparsis; petioli gracilis parte sub foliolis 3-4 lin. longa; stipule 
. fuscze, lanceolato-subulate, deflexee, circiter 3 lin. longe, persistentes ; stipelle longiuscule, 
setulosz. Flores mediocres, laxe racemosi; racemi simplices, terminales, pauciflori, longe 
graciliterque pedunculati, cum pedunculis 8-9-pollicares, pedicellis geminis gracilibus, circiter 
semipollicaribus ; bracteze decidue non vise; calyx sparsim pilosus, lobis inzequalibus. Legu- 
men flavescens, uncinato-puberulum, scabriusculum, sepe 4-articulatum, vix pollicare, articulis 
oblique ovatis. 
Nort Mexico, region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 179). 
Hb, Kew, | 
