its 



NATURAL HISTORY OF PLANTS. 



Cleome (Gynandropsis) 

 pentaphylla. 



leaves with from three to seven leaflets. They inhabit the tropics 



in both hemispheres. 



Thus constituted, 1 the great genus Cleome 

 comprises some five-score species, 2 nearly all 

 exotics, inhabiting hot countries ; some few 

 alone come from the Mediterranean. 



Widizenia refracfa, 3 a North American annual, 

 with alternate trifoliolate leaves, and flowers in 

 short racemes, has the tetramerous calyx and 

 corolla of a Cleome with six stamens. But its 

 long-stipitate ovary has two short didymous cells, 

 each containing two ovules, surmounted by a long 

 subulate style. The dry fruit is also stipitate 

 and didymous ; its hardened foot is continued 

 into the interlocular septum, surmounted by the 

 style ; from this separate the two mono- or di- 

 spermous cells of the capsule. The seeds are reni- 

 form conduplicate ; the embryo is strongly 

 Fig. 173. arcuate, with the apex of the incumbent coty- 



Fiower. ledons close to the radicle. 4 



f 1. Siliquaria (Forpk.). 



2. Physostemon (Mart.). 



3. Polanisia (Raein.). 



4. Tetrateleia (Sond.). 



5. Ranmanissa (Endl.). 



6. Corynandra (Schrad.). 



7. Chilocalyx (Kl.). 

 Cleome 8? Decastemon (Kl.). 

 sect. 16. 9. Dianthera (Kl.). 



10? Anomalostemon (Kl.). 



11. Daetylama (Schrad.). 



12. Periioma (DC.). 



13. Cristatella (Nutt.). 



14. Bushia (Bgk.). 



15. Isomeris (Xltt.). 

 J6. Gynandropsis (DC). 



• Wight & Arn., Prodr., i. 21, 22 {Pola- 

 nisia). — Sibth., Fl. Grcec, t. 650. — Griseb., 

 Fl. Brit. W. Ind., 15.— Kl., in Pet. Moss., 



Bof., 151, 157, 159, 162.— Benth., FL Austral., 

 i. 89, 91.— Hak\ ., Thes. Cap., t. 136.— Harv. 

 & Soxn., Fl. Cap., i. 56, 58. — Eichl., in Mart. 

 Fl. Bras., Cappar., 212, 213, 245, t. 54-58.— 

 Oliv., Fl. Trop. Afr., i. 74, 81.— Boiss., Fl. 

 Or., i. 410-416.— Walp., Rep., i. 193, 195, 196 ; 

 ii. 764; v. 52, 53; Ann., i. 59, 60; ii. 57; iv. 223; 

 vii. 180. 



3 Engeoi., Bot. Wisliz. Exped., 15, not. — 

 A. Gray, PI. Wright., t. 2.— B. H., Gen , 106, 

 n, 8.— Walp., Ann., iii. 823 ; iv. 22 I. 



4 This genus is perhaps (?) related to Gxy- 

 s'tjlis lutea Toi:r. & 1'rem. (in App. Frem. 

 Rep., 312; in Duck. Rev. Bot., ii. 53;— B. H., 

 Gen., 107, n. 9; — Walp., Ann., i. 59), a Cali- 

 fornian plant, which we have been unable to 

 study, but which seems to ns, from the very 

 incomplete description given of it, hardly distinct 

 from IVislizenia. 



