CROWN-BARK 187 



colouring dishes, liqueurs, &c. [See Kronfeld's Ceschichte des Sa/rans, 

 &c., Wien 1892, or Beih. z. Dot. Centr., 1893, p. 71.] 



Crocus, autumn, Colchicum attfumnale L. 



Crocyllis E. Mey. Rubiaceae (n. 7). i S. Afr. 



Croftia King et Prain. Zingiberaceae (l). i India. 



Croftia Small (Schaueria p.p.)- Acanth. (iv. B). r N. Am. 



Croixia Pierre. Sapotaceae (n). i Malaya. 



Crookea Small (Ascyrum p.p.)- Guttif. (n). i N. Am. 



Croomia Torr. ex Torr. et A. Gray. Stemonaceae. 3 E. U.S., Japan. 



Crosnes, Stachys Sicboldi Miq. 



Crossandra Salisb. Acanthaceae (iv. B). 17 trop. As., Afr., Madag. 

 The seeds of many sp. are covered with scales which spread out and 

 become sticky when wetted (cf. Linum). Cult. orn. fl. 



Cross-fertilisation or -pollination, pollination from a distinct plant ; 

 cf. Floral mechanisms, Flower classes, &c. 



Cross-wort, Galiitm. 



Crossandrella C. B. Clarke. Acanthaceae (iv. B). i Uganda. 



Crossonephelis Baill. Sapindaceae (l). r Nossi Be. 



Crossopetalum P. Br. = Myginda L. (Celastr.). 



Crossopteryx Fenzl. Rubiaceae (i. 5). i trop. Afr. 



Crossosoma Nutt. The only genus of Crossosomataceae. 3S.W. U.S., 

 Mex. Shrubs with small stiff 1. and sol. 11. Like Rosaceae Spiraeoi- 

 deae, but seeds kidney-shaped, with rich endosp. Aril. (Engler.) 



Crossosomataceae (EP.; Dillcniaceae p.p. BH.). Dicots. (Archichl., 

 Rosales). Only genus (q.v.} Crossosoma. 



Crossostemma Planch, ex Benth. in Hook. Passifl. i W. trop. Afr. 



Crossostephium Less. Compositae (7). i China, Phil. Is. 



Crossostylis Foist. Rhizophoraceae. 6 Polynesia. 



Crossotropis Stapf. Gramineae (n). 3 trop. Afr., Arabia. 



Crotalaria Dill, ex L. Leguminosae (in. 3). 350 trop. and subtrop. 

 C. jnncea L. (India, Austr.), an annual about 8 ft. high, is largely 

 cult, for the fibre obtained from its stems by maceration in water 

 (cf. Linum), known as Sunn-hemp, Bombay or Madras hemp, &c. 

 C. retusa L. (trop.) is also employed. 



Croton L. Euphorbiaceae (A. II. i). 600 trop. and subtrop. Fls. 

 mon- or dioecious, little reduced from the type of the fam. C. Tigliiiin 

 L. (trop. As.) is the source of croton oil (a powerful purgative drug, 

 expressed from the seeds). C. Cascarilla Benn. and C. Eluteria Benn. 

 (Bahamas) yield Cascarilla bark, used as a tonic (cf. Cascarilla). 

 C. laccifcrus L. (India, Ceylon) yields a lac, used in varnish-making, 

 and several Brazilian spp. a dragon's blood resin. 

 Croton (of trop. gardens), Codiaeum variegatum Bl. 

 Croton-oil, Croton Tiglinni L. 



Crotonogyne Muell.-Arg. Euphorbiaceae (A. n. 2). to trop. Afr. 

 Crotonogynopsis Pax. Euphorbiaceae (A. n. 2). i trop. Afr. 

 Crotonopsis Michx. Euphorbiaceae (A. n. i). 2 N. Am. 

 Crow-berry, Em pel nun nigrinn ' L. ; -foot, Ranunculus; -foot-grass, 



Dactyloctcn in in. 



Crowea Smith. Rutaceae (i). 4 Austr. 



Crown-bark, Cinchona ; -beard (Am.), Verbesina ; -Imperial, Frilil- 

 laria imperialis L.; -palm (W.I.), Maximiliana. 



