SCROPHULARINEA, 453 
Generally dispersed in Tropical Sours America and the West Inprgs; also in TROPICAL 
AFRICA and Mapagascar. Hb. Kew. 
23. ILYSANTHES. 
Ilysanthes, Rafin.; DC. Prodr. x. p. 418; Benth. et Hook. Gen. Plant. ii. p. 955. 
Kight annual herbaceous species inhabiting North America, South Africa, India, 
and Australia, one recurring in South America. 
1. Tlysanthes gratioloides, Benth. in DO. Prodr. x. p. 419; A. Gr. Synop. Fl. 
N. Am. ii. p. 283. 
Capraria gratioloides, Linn. Sp. Pl. p. 876. 
Herpestis callitrichoides, H. B. K. Nov. Gen. et Sp. ii. p. 367. 
CanaDa and OrEGon southward to FLoripa, Texas, and Canirornra.—NortH Mexico, 
region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 676); Sour Mexico ; 
Nicaragua (Tate, 328); Costa Rica, San José (Grsted) ; Panama, Chagres (Fendler, 
214).—Tropical Soura America; Eastern Asia, and naturalized in Western ‘Europe. 
Hb. Kew. 
24. MICRANTHEMUM. 
Micranthemum, Michx. Fl. Bor.-Am. i. p. 10; Benth. et Hook. Gen. Plant. ii. p. 956. 
A genus of delicate herbs, comprising about sixteen species, chiefly Cuban, the 
remainder inhabiting North and South America. 
1, Micranthemum orbiculatum, Michx. Fl. Bor.-Am. i. p. 10, t. 2; DC. 
Prodr. x. p. 423; A. Gr. Synop. Fl. N. Am. ii. p. 284. 
Nortu CaroLina to Texas.—Panama, Santiago de Veraguas (Seemann, 309).—South- 
ward to Peru and BraziL, and in Cusa and Trinipap. Hb. Kew. 
25. HYDRANTHELIUM. 
Hydranthelium, H. B. K. Nov. Gen. et Sp. vii. p. 202, t. 646; Benth. et Hook. Gen. Plant. ii. 
p. 957. 
Two or three species of slender herbs, inhabiting marshy places in Tropical America, 
one recurring in Tropical Africa. 
1. Hydranthelium egense, Pcepp. et Endl. Nov. Gen. et Sp. iii. p. 75, t. 287; 
DC. Prodr. x. p. 425. 
San Satvapor (Bernoulli, 13).—CotomBia to Peru and North Braziu; also in west 
Tropical Arrica. Hb. Kew. 
26. LIMOSELLA. 
Limosella, Linn. Gen. Plant. n. 776; Benth. et Hook. Gen. Plant. ii. p. 958. 
Small aquatic or subaquatic herbs. About six species or distinct forms, whereof one 
or two are generally diffused, and the rest South-African. 
