GENTIANER. 347 
‘Soury Mexico, San Blas to Tepic (Sinclair, Barclay), near Guadalajara, 5500 feet 
(Galeotti, 1478). Hb. Kew. 
10. Erythrza tetramera, Schiede ex Schl. in Bot. Zeit. 1855, p. 918. 
Sout Mexico, Cuernavaca (Schiede). 
4. GENIOSTEMON. 
Geniostemon, Engelm. et A. Gr. in Proc. Am. Acad. xvi. p. 104. 
A genus of dwarf, slender, branching herbs, differing from Erythrea in having 
bearded filaments. Limited to the following species :— 
1. Geniostemon coulteri, Engelm. et A. Gr. loc. cit. 
Caulibus tenuibus parum ramosis equaliter foliatis, ramis unifloris, foliis spathulato-lanceolatis 
(lin. 3 longis) basi attenuatis, pedunculis flore haud longioribus, filamentis infra medium 
creberrime glanduloso-barbulatis, anther loculis utrinque obtusis (corolla lin. 4 longa ut 
videtur alba ?). 
Mexico (Coulter, 945). | 
2. Geniostemon schaffneri, Engelm. et A. Gr. loc. cit. (Tab. LVII. B. 
fige. 6-8.) 
Radice forti annua multicauli, caulibus cymoso-ramosissimis et multifloris, foliis linearibus 
(lin. 2-3 longis) imisve spathulatis summis subulatis basi haud angustatis, pedunculis graci- 
libus flore longioribus, filamentis sub apice barbulatis inferne nudis, antherz loculis basi sub- 
acutis, corolla czerulescente. 
Norra Mexico, mountains of San Miguelito, San Luis Potosi (Schaffner). Hb. Kew. 
EXPLANATION OF TAB. LVII. B. Fiee. 6-8. 
Fig. 6, a flower ; 7, the same, laid open; 8, a stamen: all enlarged. 
5. SABBATIA. 
Sabbatia, Adans. Fam. ii. p. 503; Benth. et Hook. Gen. Plant. ii. p. 810. 
Annual and biennial herbs. - About fifteen species in North America, two or three 
of them extending to Cuba. 
1. Sabbatia maculata, Benth. et Hook. Gen. Plant. ii. p- 812, sub Hustomate. 
Eustoma maculatum, Benth. Pl. Hartw. p. 292. 
SoutH MExico, rivulets near Lagos (Hartweg). Hb. Kew. 
6. SCHULTESIA. 
Schultesia, Mart. Nov. Gen. et Sp. ii. t. 180 ad 182; Benth. et Hook. Gen. Plant. ii. p. 811. 
A Tropical-American genus of annual herbs, comprising about fifteen species. 
1. Schultesia brachyptera, Cham. in Linnea, viii. p. 8; Vidensk. Meddel. 
1853; Mart. Fl. Bras. vi. p. 208. 
Nicaragua, Volcan de Masaya (@rsted).—Gutana; Brazit. Hb. Kew. 
2y 2 
y 
