172 Robinson and Greenman—Genus Lamourouxia. 
Nelson, 1040, 1181. Andrieux’ 158, from Gonocatepec, referred 
by Hemsley to Z. viscosa, has the pubescence, serrulate calyx- 
lobes, and elliptical rameal leaves of the present species, of which 
it is probably only a small and more densely-flowered form. 
+ + Calyx-lobes entire: corolla tubular, scarcely ventricose. 
++ Inflorescence loose. 
13. L. Smirum. Habit of the preceding: leaves of the stem 
ovate, sharply serrate, acute, somewhat larger, 2 inches long, an 
inch broad ; the rameal ovate, subcordate, sessile, not elliptical 
and shortly petiolate as in the preceding: inflorescences consid- 
erably branched : calyx-tube short-cylindrical, 3 lines long; lobes 
lanceolate, acute, entire, about equal in length; nerves from the 
sinuses distinct, single or double: corolla 2 to 24 inches long.— 
Mountains of Jayacatlan, Oaxaca, altitude 5,000 feet, 13 August, 
1894, LZ. C. Smith, 155. 
++ ++ Inflorescence dense. 
14. L. viscosa HBK. More or less glandular-tomentose: stem 
rather rigid, terete: leaves ovate-oblong, thickish, sharply-serrate. 
—HBK. |. «, 338. LZ. cordata, Cham. and Schlecht. Linnea, 
v, 103. JL. coccinea, Gray, Proc. Am. Acad., xxi, 404 (only a less 
pubescent form).—One of the commonest species throughout the 
whole length of Mexico; Sonora, Lloyd, 437; Chihuahua, Pal- 
mer, 258; Pringle, 656; Jalisco, Palmer, 578; Pringle, 21338, 
2339; Zacatecas, Hartweg, 189; Huasteca, Hrvenberg, 112; Zim- 
apan, Coulter, 1358; Orizaba, Bourgeau, 2424; Bilimek, 285; 
Botteri, 86, 149; Seaton, 135; Oaxaca, Pringle, 4879; Nelson, 
1199, 1245; Chiapas, Ghiesbrecht, 96, 703; Guatemala, J. Don- 
nell-Smith, 4016; Mexico without locality, Sumicrast. So far as 
the characterization shows, L. Viejensis Oerst., Vidensk. Meddel. 
Kjoben., 1853, 28, from Nicaragua is also the same. 
' « % Leaves lanceolate, narrowly oblong, elliptical or linear, narrowed at the 
base, and often petioled. 
+ Posterior filaments bearing reduced villous anthers. 
++ Corolla short for the genus, 8 or 9 lines long: leaves incisely serrate: species 
of Ecuador. 
15. L. sunrncisa Benth. “ Habit of Z. brevifolia: leaves lan- 
ceolate, an inch or less in length.”— Benth. 1. c., x, 540.—Andes 
of Quito, Jameson. 
++ ++ Corolla longer, an inch or more in length. 
= Calyx-lobes serrulate. 
16.? L. sytvatica HBK. ‘Somewhat twining : leaves lance- 
olate, acute, narrowed at base: corolla roseate.’—HBK. l. ¢c., ii, 
337.—Near Ayavaca, Peru, Humboldt and Bonpland. <A very 
