PEA FAMILY 



141 



Pod 6 mm. wide, mottled; corolla about 1.5 cm. long. 5. H. ampleia. 



Plant hirsute; pod over 4 mm. wide. 6. H. malaca. 



Legume straight. 



Racemes short, subcapitate; corolla light bluish purple; leaflets oblong to obcor- 



date, green. 7. //. leptocarpa. 



Racemes elongate, lax; corolla cream-colored; leaflets narrowly oblong or linear, 



grajish strigose. 8. //. atratiformis. 



24. TiUM Medic. 



Stipe exceeding the calyx; pod not incurved. 



Pod not black-hairy; corolla white or ocliroleucous. 

 Pod erect, glabrous. 



Stipe much longer tlian the calyx. 



Stipe scarcely exceeding the calyx. 



Pod with a partial septum. 



Pod glabrous; stipe 3-4 mm. long. 2. 



Pod strigose; .stipe 1 mm. long. 3. 



Pod without septum. 4. 



Pod reflexed. 



Plant villous; pod cordate in cross-section. 5. T. Drummondii. 



Plant appressed-pubescent or glabrous ; pod more or less triangular or inverted 

 V-shaped in cross-section. 

 Pod 2-3 cm. long; corolla 15-20 mm. long. 



Calyx not black-hairy ; pod straight. 6. 



Calyx black-hairy; pod arcuate. 7. 



Pod less than 1.5 cm. long; flowers 6-8 mm. long. 8. 



Pod black-hairy; corolla violet or purple. 9. 



Stipe shorter than the calyx or almost none; pod incurved. 

 Pod mottled ; plant green, very slender. 

 Stem slender, spreading. 



Raceme 1-5-flowered, short; leaflets obovate or orbicular. 



10. T. sparsiflorum. 

 Raceme 5-10-flowered; leaflets linear. 11. T. owyheense. 



Stems stout, erect; raceme 5-15-flowered. 



Leaflets obovate or orbicular. 12. 



Leaflets narrowly elliptic. 13. 



Pod not mottled; plant cinereous. 



Pod appressed-pubescent. 14. T. humistratum. 



Pod hirsute-villous, with spreading hairs. 15. T. desperatum. 



25. DIHOLCOS Rydb. 



Pod glabrous; body about 1.5 cm. long; upper calyx-teeth 3-4 mm. long; corolla white. 



1. D. decalvans. 

 Pod strigose; upper calyx-teeth less than 3 mm. long. 



Body of the pod 12-15 mm. long; corolla usually purple. 2. D. bisulcatus. 



Body of the pod rarely 10 mm. long; corolla white or straw-colored, only the keel 

 sometimes tipped with purple. , 



Pod distinctly cross-ribbed. 



Corolla more than 1 cm. long ; pod very acute at both ends ; stipe 5 mm. long. 



3. D. scobinatulus. 

 Corolla less than 1 cm. long ; pod obtusish or abruptly acuminate at both ends ; 

 stipe 3 mm. long. 4. D. Haydenianus. 



Pod not cros.s-ribbed ; corolla 6 mm. long. 5. D. micranthus. 



1. T. eremiticum . 



T. atropubescens. 

 T. obscurum. 

 T. arreclum. 



T. raceniosum. 

 T. scopulorum. 

 T. Rusbyi. 

 T. alpinum. 



T. variegatum. 

 T. naturitense. 



26. JONESIELLA Rydb. 



27. RYDBERGIELLA Fedde & Sydow. 



Pod with a broad partition, almost 2-celled, except at the apex. 

 Pod with a narrow, sometimes obsolete partial partition. 

 Stipe of the pod 4-8 mm. long. 

 Leaflets oblanceolate or oblong. 

 Leaflets obovate. 

 Stipe of the pod 1-2 mm. long; leaflets oblong to oval. 

 Plant glabrous; leaflets oblong, retuse. 



1. J. asclepiadoides. 



1. R. scaphoides. 



2. R. arcta. 



3. R. Preussii. 



4. R. praelonga. 



nam. gia,ijroiis; leauets ooiong, reiuse. 4. «. praeionga. 



Plant hispidulous-strigose on the upper parts of the stem and the lower surface 



of the leaves 



28. CTENOPHYLLUM Rydb. 

 Leaflets narrow. 



Leaflets filiform or nearly so, 2-4 cm. long, 1-2 mm. wide. 

 Leaflets Unear, 2-3 cm. long, 3-4 mm. wide. 

 Leaflets oblong to broadly obovate. 



29. CNEMIDOPHACOS Rydb. 



Pod with a rudimentary partition. 

 Pod without a partition. 



Calyx densely black-villous. 



Calyx not black-hairy or with a few scattered black hairs. 

 Calyx strigose with rather short hairs. 



5. R. PaUersonii. 



1. C. pectinatum. 



2. C. Grayi. 



3. C. adanum. 



1. C. reventoides. 



2. C. reventus. 



