SCIENTIFIC AND POPULAR. HI 



537. COLEOSANTHUS, Cass. 1817. Coleosantluis. Coinpositae. 



From Greek, ''sheath flower". Syn. Brickellia, Ell. 1824 

 Eupatorium, in part. Herbs or shrubs. About 60 species, S6 



in IJ. S. 



538. COLLINSIA, Nutt. Collinsia. Serophulariaceae. 



Named for Zacchaeus Collins, botanist of Philadelphia, d. 

 1831. Herbs. About 25 species, K America; 22 in U.' S. 

 mostly of California. 



a. C. verna Nutt. New York to Wisconsin and Indian Territory. 

 Blue-eyed Mary, Innocence, Broad-leaved Collinsia. 



539. C0LLINS6XIA, L. Horse-balm, etc. Labiatae. 

 Named for Peter Collinson, English botanist, d. 1768. Syn. 



Hypogon, in part. Kank-growing aromatic herbs. Two or 

 three species, eastern N. America; 1 in U. S. 



a. C. anisata Sims (H. anisatum Eaf. ). Southeastern U. S. 



Anise-root. 



b. C. Canadensis L. Ontario to Florida and west to Kansas and 



Wisconsin. Horse-balm, Stone-root, Citronella, Rich-weed. 

 Rich-leaf, Horse-weed, Ox-balm, Heal-all*, Knob-root, Knob- 

 grass, Knob-weed, Hard-hack* Knot-root; Ger. Collinsonie; 

 Fr. Guerit-tout, Baume de cheval. i^ooi diuretic, diaphoretic,' 

 expectorant. Leaves vulnerary 



540. COLLOMIA, Nutt. Collomia. Polemoniaceae. 



From Greek, ''glutinous", of the seeds. Syn. Gilia, in 

 part. Herbs, mostly annual. About 15 species, western N. 

 America; 9 in U. S. 



541. COLOCASIA, Schott. _ Taro, Cocco, etc. Araceae. 

 Greek name of an Egyptian Avater plant. Syn. Arum, Cala- 



dium, in part. _ Acrid herbs from thickened rhizomes. About 

 5 species, tropical Asia, one widely distributed. 



a. C. Colocasia (L. ) Lyons (A. Colocasia L., C. antiquorum 

 Schott, especially the variety esculenta, C. esciilenta (L. ) 

 Schott, A. esculentum L., Cal. esculentum Vent.). - Tropical 

 Asia, cult, in most tropical countries. Fleshy rhizomes acrid 

 when uncooked, abounding in starch, when cooked a, palatable 

 and nourishing food, the Taro (Kalo) of the Pacific Islands, 

 where it is the chief food of the natives. In the West Indies 

 called Cocco, Cocoe, Tanya, in West Indies and Africa also 

 Eddoes (Eddas, Edders), in China Yu-tao, in Japan Sato-imo, 

 in Central America Oto. Another name is Kalkas. Leaves 

 (luau) used as a pot herb. Plant much cultivated in U. S. for 

 ornament. 



542. COLOCrANIA, Kunth. Cologania. Papilionaceae. 



Herbaceous climbers. About 12 species, New World, es- 

 pecially Mexico; 4 in U. S. 



543. C0L6pTERA, Coult. & Rose. Coloptera. Umbelliferae. 



Herbs. Three species in western U. S. 



