282 LEGUMINOS&. 
42. Desmodium (§ Heteroloma) macrostachyum, ‘Hemsl. Diag. Pl. Nov. 
pars 3, p. 44. 
Herbaceum, elatum, caulibus simplicibus crassiusculis profunde sulcatis breviter uncinato-hispidis, 
foliis amplis trifoliolatis, foliolis elongatis lanceolato-oblongis acuminatis acutis supra glabris 
subtus secus venas et ad marginem appresse setulosis, floribus mediocribus in racemos termi- 
nales longissimos strictissimos dispositis, legumine angusto 6-8-articulato densissime uncinato- 
hispido arctissime reflexo. 
Herba pluripedalis, caulibus erectis, simplicibus, crassiusculis, in siccis profunde sulcatis, intus 
medullosis, extus omnino breviter uncinato-hispidis, internodiis quam folia multo brevioribus. 
Folia usque 9-pollicaria et ultra, longe petiolata, pinnatim trifoliolata ; foliola breviter petiolu- 
lata, crassiuscula nec coriacea, lanceolato-oblonga, 4-7 poll. longa, maxima 1 poll. lata, 
gradatim acuminata, acuta, utrinque prominenter venosa, venis primariis lateralibus elongatis, 
subtus conspicuis, cum costa angulos acutos formantibus, pagina superiore glabra, inferiore 
precipue secus costam et venas et ad marginem appresse setulosa; petiolo glabro, toto 2-3- 
pollicari, parte sub foliolis 14—2-pollicari ; stipule e latissima basi filiformi-acuminate, arcte 
appresse, striate, usque pollicares ; stipelle lineari-subulate, semipollicares et ultra. Flores 
mediocres, in racemos simplices terminales angustos longissimos dispositi ; racemi usque ses- 
quipedales ; pedicelli seepe gemini, reflexi, circiter 2 lin. longi; calyx coloratus, glaber, 
lobis latis vix acutis. Legumen angustum (maturum non visum), vix pollicare, 6-8-articulatum, 
densissime uncinato-hispidum, deorsum supra rhachin arctissime appressum. 
Sout Mexico, Oaxaca (Ghiesbreght). Hb. Kew. 
This species is characterized by its tall simple barbellate stems; long, nearly naked 
leaves ; the very long narrow terminal racemes, and by the pods being turned down and 
closely applied to the rhachis. 
43. Desmodium (§ Chalarium) madrense, Hemsl. Diag. Pl. Nov. pars 3, p- 45. 
Fruticosum vel suffruticosum, ramosum, ramis graciliusculis teretibus sparsim pilosis, foliis amplis 
trifoliolatis, foliolis lanceolato-oblongis vel ovato-oblongis acuminatis mucronulatis discolo- 
ribus subtus pallidioribus junioribus subtus petiolisque patentim pilosis, floribus mediocribus 
racemoso-paniculatis, paniculis brevibus, ovario puberulo circiter 7-ovulato, legumine glabro 
seepe 5-7-articulato, articulis suborbicularibus. 
Frutez vel suffrutexr ramosus, novellis plus minusve pilosis, ramis graciliusculis, teretibus, primum 
sparsim pilosis, atro-fuscis. Folia petiolata, pinnatim trifoliolata ; foliola breviter petiolulata, 
lanceolato-oblonga vel ovato-oblonga, maxima 5-pollicaria, cetera 13-38-pollicaria, basi rotun- 
data, sursum gradatim acuminata, apice mucronulata, discoloria, “subtus pallidiora, supra 
glabra, subtus petiolisque primum patentim pilosa, demum fere glabra, petiolo 6-18 lin. longo; 
stipulz deciduz non vise ; stipelle filiformes, circiter 2 lin. longe. Flores mediocres, race- 
moso-paniculati; panicule semipedales, multiflorz ; bracteze ample, pilose, acuminate, cito 
deciduz ; pedicelli gemini vel solitarii, filiformes, 1-3 lin. longi; calyx sparse pilosus ; 
ovarium longiuscule stipitatum, puberulum, circiter 7-ovulatum. Legumen (maturum non 
visum) glabrum, spe 5-7-articulatum, planum vel leviter spiraliter tortum, circiter pollicare, 
articulis suborbicularibus.—D. canadense, Seem. Bot. Voy. ‘ Herald,’ p. 28, nec DC. 
Norru Muxtico, Sierra Madre (Seemann, 2184). Hb. Kew. | 
This species is nearer D. paniculatum, DC., than D. canadense, DC., to which 
Seemann had referred it; but the glabrous pod is very different. 
