658 RYDBERG: ASTRAGALUS AND ITS SEGREGATES 
Lower suture not intruded or merely slightly so; podsin the latter case woody. 
Pods strongly inflated, ei 14. PHACA, 
Pods not inflated, or slightly so, membranous to woody. 
ods with a partial he formed by the inflexion of the lower suture. 
Pods membranous. 6. ATELOPHRAGMA, 
Pods 
Pha pea ; leaves unifoliolate. 7. JONESIELLA. 
Pods sessile; leaves pinnate. 
yx-tube short, campanulate, equaling or shorter than the lobes ; 
on 
tall renies pese HACOPSIS. 
alyx-t 1, longer than the lobes ; low, cespitose, cinerous 
or villous ‘tied: 9. XYLOPHACOS. 
Pods without a vestige of a partition. 
Pods not with two grooves on the upper side cae if slightly grooved, sessile). 
Pods with a fleshy epicarp, in fruit peut leaflets obscurely 
articulated to the rachis, fleshy, narro o. CTENOPHYLLUM 
Pods without fleshy epicarp; leaflets isles Stoaeine to the rachis. 
ods woody or at least leathery, flattened or slightly intruded on the 
lower side. 
Calyx cylindrical ; flowers large ; plant mostly low and cespitose. 
g. XYI.OPHACOS, 
Calyx campanulate ; flowers small. 
Corolla yellow ; oe linear-lanceolate, equaling the tube ; 
stipules united ; stem low. 12. CNEMIDOPHACOS. 
Corolla purple ; sti lobes triangular, much shorter than the 
tube; stipules free or nearly so; stem tall and slen 
. MICROPHA 
Pods cuales usually more or less ice laterally, sik both 
sutures prominent. 
Leaves eshaieon tipped ; pods I-2-seeded. 1 15. KENTROPHYTA. 
Leaves not spinulose-tipped ; pods several- to many-seeded. 
16, HOMALOBUS, 
Pods with two grooves on the upper side, stipitate. 13. DrHotcos. 
Leaves digitately trifoliate. 17. OROPHACA. 
1. GEOPRUMNON Rydb.; Small, Fl. SE. U.S. 615. 1903. 
Besides by the type, G. crassicarpum (Nutt.) Rydb., the genus 
is represented by : 
mnon succulentum (Richardson) Rydb. 
Astragalus succulentus Richardson, Franklin Journey 746. 1823. 
Astragalus prunifer Rydb. Mem, N. Y. Bot. Gard. 1: 239. 1900. 
2. ASTRAGALUS L. Sp. Pl. 755. 1753. 
As the type, I regard A. christianus L., which was an article of 
food in the desert regions of Syria and the Holy Land. The 
