CONTRIBUTIONS TO WESTERN BOTANY 39 
Lysiloma Cayucensis n. sp. No. 27251 Cayuca ranch 
Sierra Gigapta mts. L. Cal, Oct 23 1939 <A slender and open 
bran: Her shrub or smal] tree, with twigs somewhat chestnut col_ 
ored wind hs slender and very. leafy. Leaves 3-6 inches long, 
with 3 4 pairs of pinne which are about 2 inches long. Leaflets’ 
15-2 pairs, enowly oblong. barely aoute, about 6 mm. long b 
2mm. yes appearing smooth but really iti tparsely nageters 
venose, with about 6 large meshes on eit | side of the midrib. 
Pods 3 iy 1 inches, elliptical-oblong, Satie and rounded at base 
and on a stipe 4-6 mm, long, reddish and thin. 
Albizzia occidentalis of authors seems to bea Leucena, it is 
a beautiful tree with tall trank and widely spreading branches. 
I got eg both at the Borrego ranch and on the Cape road to Todos 
Sant 
Climadorachts Ifemsl. & Rose Cont. Nat. Herb. 8 
43 1403 1s not distinct enough from the pudica-pusilla section of 
Mimosa. I therefor propose the transfer of their names of species 
as follows. Mimosa Mexicana(H. & R.)C. Mexicana lH, & R. 
M.untivga. C. fruticosa H.& R. The body of the pod sepa- 
rates from the rim as in Mimosa. The annual forms of Aischy- 
nomene are gecesi’ too close to Mimosa for comfort. That 
Mimosa Aischynomene, Acacia and Pithecollobium reed a thor- 
eugh overhauling goes without saying, but Rose was not the man 
to do it because of hia sloppy generic ideas 
Mimosa Lagu nensis n. sp. No. 27290. On the laguna, 
Laguna mts. L. Cal. Sept 22 1930. A rather Boats branched 
shrub 4-6 ft. high, with hooked prickles. Leavy s with 2 pinne 
and with each pinna having 5-10 obliquely cblong leaflets about 4 
mm. long by 2 mm. wide, rather ri id, nervo e, sharply apiculate, 
half-coruate below and with midrib not eae and with 5 nerves 
from the base on the upper cht ee, hairy especially on the 
margins, with the rachis and petiols short and very hairy. Heads 
few- flowered, on Pah So urcls 1-2 inches long. Pods short- 
stipitate, an inch by 4 mm. long and wide, of about 4 joints eon- 
stricted + the way to the suture and abruptly setose-acuminate, 
sparsely and ver y shortly aculeate and short-pubescent. The very 
amall leaflets and pods simulate ein Paint 1B 
limosa inequalis n.sp. No. 27267. Guadalajara, 
Mex. Nov. 26 130. Annual, very widely branched, a foot high, 
Leave a sparse, of 2 pairs of leaflets which are obli iquely obovate 
and rounded, with midrib not in the middle, thin, barely apicn- 
late, yreen, strongly nerved, with 3 basal nerves above the midrib, 
setosely yellow-hairy as are the pods also, on petioles 1-2 inches 
long which are similarly hairy. Heads on stout peduncles. Pods 
4 2 inch long, obliquely oblong, 4 mm. wide, shortly acuminate, 
flut, 3-seeded, with margins little if at all indented, mang, in com- 
pact heads, body easily separating from the frame; 
