i40 CONTRIBUTIONS TO WESTERN BOTANY NO. \s 



base, venose and with. midfiBT in the center, 2;- 2: S cm. long and about 

 mm. wide. Old leaves falling as the flowers come out. Petioles about 



cm. long. 



triped, about 1 cm. long, in short 



c(»npound racemes an inch or two long, which are densely clustered. 

 Stipe, pedicels and axis densely spreading-short-hairy. Calyx thin and 

 Hght-green, about 5 mm. long, turbinate, the teeth about half the whole, 

 rather oval, becoming apparently triangular and spreading in fruit, some- 

 what pubescent. Fruit of about 4 joints, 8-10 mm. long by 7-8 mm. 

 wide, half-oval to oblately so,, the ventral one somewhat arched, becoming 

 glabrous, but puberulent when young, finely reticulated, the terminal one 

 with a conspicuous triangular beak, the basal joint about as long as the 

 stout and straight stipe. No. 23057, Acaponeta, Nayarit, March 1, 1927, 

 at El Tigre mine, growing among live oaks. The conspicuous thing about 

 this species is that is a rather tall and slender shrub, with mid-nerve of 

 leaflets in the middle, and' Uaves falling as the flowers come out, leaving 

 the stems leaflessi, and the large tufts of golden-yellow flowers. Ae. 



Rob. is poorly described 



species 



Standley in 

 species is a shrub. Ae. glom- 



megacarpa N. Sp. Large shrub or small tree about 20 feet high. 



and gray bark, leaves at first very 



widev with about 5 



arran 



irrren, smooth and shining on both 

 kathcry, about 7 cm. loni? bv .1 



cm. wide, elliptical, obliquely and tri- 

 .^..=.v..c..-a,.uLc, citui iuauei in ine pairs appear almost as the half of an 

 oval leaflets split in the middle. Mature pods rarely more than two on a 

 *^oodv peduncle about an inch long and over % inch thick and similar 

 t^ tl.e branch from which if arises. Pods 10-12 cm. long by 4 cm. wide, 

 and .1 cm. thick, chestnut-colored, oval in cro^^-section, with the ventral 

 siitnr^ raised as a ridge, obliquely rounded at both erds. the surface 

 •■tTruiated and shining and smooth. Walls about 3 mm. thick and very 

 n:»rd and woody. Interior of pod is filled with a cellular pulo which 

 !r.;.o?e=i the seeds. Seeds about three, black and smooth, somewhat fat- 

 tene.f and about 1 cm. long, and round. Pods very hea\7, a little arcu- 

 jue, thr>t 1.^ not s}Tnmetrical. The leaves of this are constructed much after 

 be fashion of Pithecolobium dulce. No. 23012, Acaponeta, Nayarit. 

 l-ehnian' 25, 1927. Growing on hills , i- , ^ 



Phas^oliis sanctorum N. Sp. This species has the pods more — - 

 bhng Phynchona than is u.sunl. but the seeds are several, which 

 rhrow ,t in Phaseolus. A slender perennial, climbing over bu.=hes, a ya-d 

 or more long and with elongated intemodes and inclined to have two 

 peduncles in tfie ^ils, sparsely ashy-pubescent at least when young. Leaf- 

 -1 ,' ''"5 ^'"^^^ rhomboidal and about as broad as long, fleshy and 

 -Uh broadly cuneale base, acutish, triple to quintuple nerved, on petioles 

 ba;-d y longer than the terminal leaflet Peduncles longer thai the leaves, 

 -nate, one to few flowered. Flowers not 1 cm. long, yellowish bi^t .vith 

 tips somewhat colored. Calyx ahnost rotate and verv broadlv short-lobed. 



would 



