CONVOLVULACES. 401 
This plant is very widely diffused in Temperate and Tropical America, Tropical Asta, 
Soutn Arrica, AUSTRALIA and New Zeaanp, and Paciric Isuanps. Hb. Kew. 
8. CRESSA. 
Cressa, Linn. Gen. Plant. n. 313; Benth. et Hook. Gen. Plant. 11. p. 881. 
“One half-shrubby species. 
1. Cressa cretica, Linn. Sp. Pl. p. 325; DC. Prodr. ix. p. 440; Lam. Ill. t. 183; 
Sibth. Fl. Gree. t. 256; A. Gr. Synop. Fl. N. Am. ii. p. 219. 
Another plant having a very wide range of distribution, chiefly in sandy, maritime, 
and‘saline districts of the warmer regions of both hemispheres, including the South of 
Europe. Hb. Kew. 
9. CUSCUTA. 
Cuscuta, Linn. Gen. Plant. n.170; Benth. et Hook. Gen. Plant. ii. p. 881. 
A genus of herbaceous, leafless, climbing parasites, inhabiting most temperate and 
warm regions. About eighty species are known. 
1. Cuscuta americana, Linn. Sp. Pl. p. 180, pro parte; Choisy, Cusc. p. 186, 
t. 4. fig. 4; Engelm. in Trans. St. Louis Acad. i. p. 482; A. Gr. Synop. Fl. N. Am. ii. 
p. 228. | 
Cuscuta congesta et C. globulosa, Benth. Bot. Voy. ‘ Sulphur,’ p. 138. 
NortH Mexico, Mazatlan (Gregg); Sourn Mexico, Acapulco (Sinclair); GUATEMALA, 
Mazatenango (Bernoulli, 59).—CotomBia; VENEZUELA; Guiana; Brazit; West INDIEs. 
Hb. Kew. 
2. Cuscuta applanata, Engelm. in Trans. St. Louis Acad. i. p. 479, et in A. Gr. 
Synop. Fl. N. Am. ii. p. 228. 
_ Arizona.—Norta Mexico, south of the Gila (Wright). 
3. Cuscuta arvensis, Beyrich; Engelm. in Trans. St. Louis Acad. i. p. 494, et 
in A. Gr. Synop. Fl. N. Am. ii. p. 220. | 
New York to Texas, Ituinois and Missouri, CaLirornia and OrEcon.— Mexico, 
Parras (Gregg), San Luis Potosi (Berlandier)—SoutH AMERICA. 
4, Cuscuta corymbosa, Ruiz et Pavon; Engelm. in Trans. St. Louis Acad. i. 
p. 483. 
Cuscuta inclusa, Choisy, Cuse. t. 2. fig. 2, et in DC. Prodr. ix. p. 455. 
Cuscuta laxiflora, Benth. Bot. Voy. ‘Sulphur,’ p. 138. 
Cuscuta stylosa, Choisy in DC. Prodr. ix. p. 459. 
- Sours Mexico, Toluca (Berlandier; Andrieux, 214), Comitan (Linden, 291), Orizaba 
(Botteri, 949), Acapulco (Hinds).—Throughout northern Sour America. Hb. Kew. 
BIOL. CENTR.-AMER., Bot. Vol. II., February 1882. | 3f 
