78 MERRILL. 



Zambales, For. Bur. oS63 Ourran: Province of Bulacaii, Yodcr 127: Province of 

 Rizal, Bur. Sci. JS-'iG: Province of Bataan, Merrill 37S7, Williams 80. 



In open grass-lands at low and medium altitudes in the Philippines ; cos- 

 mopolitan in the tropics. 



47. DESMODIUM Desv. 

 Leaves 3-foliolate. 



Pod distinctly divided into several 1-seeded joints which ultimately separate. 

 Bracts large, orbicular, persistent, foliaceous, inclosing the flowers ; an 



erect shrub 1. D. pulchellum 



Bracts very small or none. 



Flowers arranged in axillary or panicled umlnds; sliruhs or small trees. 

 Umbels axillary; leaflets broad at the apex, round, obtuse or very 

 obscurely and broadly acuminate. 



Leaflets small, 1 to 1.8 cm long 2. U. cuminyianuin 



Leaflets ample, mostly 5 to 10 cm long 3. D. umbellatum 



Umbels arranged in terminal or axillary panicles; leaflets gradually 

 narrowed upward to the acuminate oi' acute ai)ex. 



4. />. ijiiiii(]i(('i)rt(ilu)n 

 Flowers not umbellate; slirubs or lierbs. 



Pods not siiniate, tlic segments indehisceut, 3 to .5 times as long as 

 broad. 

 Erect, suffrutescent: leaflets ovate, ample, 7 to 1.) cm long, acute or 



acuminate o. D. laxifloriini 



Herbaceous, spreading; leaflets small, 2 to 4 cm long, or in luxuriant 

 forms rarely cm long, elliptic, oljfuse, rounded, or refuse. 



0. D. scorpiurufi 

 Segments of the pods dehiscent or indehiseent, not manifestly longer 

 than broad, or if so, then deeply situiate. 

 Pods not .stipitate, the segments indehiseent. as broad as long, 

 spirally twisted, both sutures deeply indented ; herbaceous. 



8. /). i)rocumbens 



Pods stii)itate, the segments longer than broad, the upper suture 



straight, the lower very deeply sinuate, the constrictions reaching 



nearly to the upper suture ; shrubby. 



leaves quite glabrous; pod long exserted, its stipe usually mucli 



h)nger than the first segment 9. D.laxum 



Leaves more or less j)ul)escent ; stipe shorter than the first seg- 

 inejit. 

 Flowers 8 to 10 niiii long: ^lods witli 2 to 4 joints.... 10. 1). srulpe 

 Flowers 3 to 4 iimi long: pods witli 1 or 2 joints. 



11. D. podocarpum 

 Pods not stipitate: both siituies slightly indented: calyx-teeth short, 

 deltoid ; shrubs. 

 Plant rather strongly |)ubescent : lejillets ilionihoid-ovate. rei>aiid: 



|)<m1 with from 8 to 12 joints 12. I). Ni)iualum 



Phuil only siiglitly pubescent; leallets ellii)tic-ol>long, entire: jmd 



with 4 joints 13. li.holstrri 



Pods not stipitate; upper suture straight, the lower deeply in- 

 dented ;■ herbaceous 14. D. wuhicophyllmn 



Pods not stipitate, the s<'gnients as long as broad. Die \ipi)er suture 

 straigiit, the lower sliglitly sinuate, dehiscent, 

 llacemes dense in both ^owci- and finit : shrulil.y. <Mecl or jirostrate 

 plants. 



