90 ^ PLANT NAMES AND SYNONYMS 



424. C^NTELLA, L. Marsh Pennywort. Unibellifcrae. 



From Latin, "little prickle". Syn. Hydrocotyle, in part. 

 Herbs or sub-shrubs. About 20 species, mostly of south Africa; 

 1 in U. S. 



a, C. Asiiitica (L. ) Urban (H. Asiatica L. (Kew), H. repanda 

 Pers. ). Maryland to Florida and Texas and widely distributed 

 in tropical countries. Indian Pennywort, Ovate-leaved Marsh 

 Pennywort, Thick-leaved Pennywort; Ger. Asiatischer Wasser- 

 nabel; Fr. Plydrocotyle (Codex), Bevilacqua; Sp. llidrocotila. 

 Plant, Herba hydroiotyles asiaticae, alterative, narcotic, used 

 in cutaneous diseases. 



426. CENTROMADIA, Greene. Centromadia. Conipositae. 



From Latin, "prickly Madia". Syn. Hemizonia, in part. 

 Resinous annuals. About 6 species, California. 



426. CE^TUNCULUS, L. Chaffweed, etc. Primulaceae. 



Latin dim. of cento, a "patch". Low annuals. Tliree 

 species, America and Australia; 2 in U. S. 



a. C. miiiiiiius L. Europe and North and South America. Chaff- 

 weed, False or Bastard Pimperel. 



CEPHAELIS. See URAGOGA. 



427. CEPHALAKTHERA, Rich. Cephalanthera. Orchidaceae. 



From Greek, "head anther". Terrestrial orchids. About 

 10 species, temperate regions; 1 in U. S. 



428. (^EPHALANTHUS, L. Button-bush. Riibiace*. 

 From Greek, "head flower". Shrubs or small trees. About 



6 species, Asia and America; 1 in U. S. 



a. C. occidentalis L. Canada to Florida and California. Button- 

 bush, Button tree, Buttonwood shrub, Box*, Crouper-bush, 

 Crane-willow, Honey-ball, Little Snowball, Mountain Globe- 

 flower, Pin-ball, Pond or Swamp Dogwood, River-bush, 

 Swamp- wood. Bark tonic, alterative. 



429. CERANTHERA, Ell. Ceranthera. Labiatae. 

 From Greek, "horn anther". Fragrant annuals. Two 



known species, southeastern U. S. 



430. CERiSTIUM, L. Chickweed. Caryophyllaceae. 



From Greek, "horn" alluding to the capsules. Herbs with 

 flowers in dichotomous cymes. About 60 species, mostly of 

 temperate zone, about 6 in U. S. 



431. CERATIOLA, Michx. Ceratiola. Empetraceae. 



A heath-like shrub, one species only, S. Carolina. 



432. CERAT6nIA, L. St. Johns-bread. Papilionaceae. 



From Greek, "horn" -podded. A small tree, one species 

 only. 



