i68 ROSE ORDER 



CASSIA Linne 1753 PARTRIDGE PEA 



(Gr. cassia, spice, from the Semitic) 



(Chamaecrista Moench) 



PL 29, fig. 2. 



Sepals 5, united, petals 5, yellow, somewhat irregular, clawed, stamens 

 10, sometimes 5, often some imperfect, pod linear-oblong, flat with several- 

 many seeds ; flowers solitary ; leaves alternate, even-pinnate ; annual. 

 Stem 1-3 ft. high; leaflets oblong, 1-2 cm. long; flow- 

 ers 2-4 cm. wide C. chamaecrista 



HOFFMANSEGGIA Cavanilles 1797 



(Named for Hoffmansegge) 



PI. 29, fig. 1. 



Sepals 5, united, petals 5, yellow, regular or nearly so, stamens 10, 

 separate, pod flat, linear to ovate, curved or straight, several-seeded; flow- 

 ers in terminal or lateral racemes ; leaves alternate, twice pinnate ; annual 

 or perennial. 



1. Leaves, flowers and fruits dotted with black 



glands ; pods 2-2.5 cm. long, 1 cm. wide, 2-3- 



seeded H. Jdmesii 



2. Plants without black dots ; pods 3-4 cm. long, 5-8 



cm. wide, 9-10-seeded H. drepanocdrpa 



FABACEAE PEA FAMILY 



Sepals 4-5, united into a calyx, rarely 2-lipped, petals usually 5, rarely 

 1, of 3 kinds, the large upper one or standard, 2 lateral wings and 2 inter- 

 mediate ones forming a keel, stamens 10, rarely 9 or 5, separate, all united 

 or nine united, pistil 1, simple, usually 1 -celled but becoming 2-many-celled 

 in fruit by cross partitions, ovules 1-many, fruit a legume, splitting by 2 

 valves, or indehiscent, occasionally a loment ; flowers usually perfect, ir- 

 regular, solitary or clustered; herbs, vines or shrubs with alternate usually 

 compound leaves. 

 1. Herbs 



a. Leaves simple or apparently so ASTRAGALUS 



b. Leaves of 3 leaflets 

 (1) Leaflets entire 



(a) Stamens all separate from each other; 



flowers large, yellow THERMOPSIS 



(b) Stamens with 9 united into a tube 



