Robinson and Greenman—Genus Lamourouaia. ry 
== = Calyx less irregular: lobes usually broad, ovate or oblong, obtusish, or in 
. the first linear-oblong and acutish, 
8. L. exsertTa. Puberulent: stem subtetragonal, copiously 
branched above: leaves narrowly lanceolate, sharply serrate, 
acute to acuminate, 1 to 23 inches long, 3 to 5 lines broad, nar- 
rowed at base to slender petiole: racemes lax and secund; pedi- 
cels 2 to 4 lines long: calyx glabrous, 4 to 6 lines in length; the 
lobes narrowly oblong: corolla 1 to 13 inches long, densely pubes- 
‘cent: stamens conspicuously exserted.— Valley of Mexico, Bouwr- 
geau, 986, Schaffner, 367; and in rich ravines of Sierra de Clavel- 
linas, Oaxaca, altitude 9,000 feet, 18 October, 1894, Pringle, 4995; 
also on top of Sierra Madre near Chilpancingo, altitude 9,000 to 
10,200 feet, 24 December, 1894, Velson, 2216, and at Tlalixtaquilla, 
Nelson, 2261. 
9. L. DEPENDENS Benth. Hirsute: leaves ovate-lanceolate: 
calyx-lobes broad and often serrate: flowers rather long-pedi- 
celed, 13 inches long: flowering branches pendulous.—Benth., 
l. ¢., 589.—“ Guatemala, Skinner.” Ghiesbrecht’s 74, 173, 176, 
and 706 from Chiapas may be doubtfully placed here, and J. Don- 
nell-Smith’s 2162, which we have not seen, has also been referred 
to this species. 
10. L. macranTHA Mart. and Gal. Pubescent with soft spread- 
ing articulated hairs: stem rather stout, erect from a somewhat 
decumbent base: leaves ovate, subsessile, doubly and rather 
deeply crenate-serrate, obtuse: racemes erect: calyx-lobes entire: 
corolla 24 inches long, red dorsally and yellow ventrally : stamens 
not produced beyond the galea.—Bull. Acad. Brux., xii, 2, 32. 
LL. betonicefolia Benth., 1. e.—South Mexico, 7,500 to 10,200 
feet altitude, on Sierra de San Felipe, Oaxaca, Pringle, 4854, 
Nelson, 1070, 1343. Originally collected in Orizaba by Galeotti. 
‘11. L. ovata Mart. and Gal., 1. c., 33. Similar to the last, but 
with flowers much shorter, 14 to 14 inches long: inflorescence 
more leafy: calyx-lobes more or less serrulate-—Oak woods, 
Sierra de San Felipe, Oaxaca, Pringle, 4762; in neighboring 
locality, Welson, 1118. Originally collected in the same general 
region by Galeotti, 989. 
§ 2. Hemispapon Benth. Fertile stamens only 2, or the pos- 
terior pair at least much shorter and with reduced anthers. 
* Leaves ovate or oblong, broad at base, sessile or nearly so; Mexican and Central 
American species. 
+ Some or all of the calyx-lobes serrate. 
12. JL. RHINANTHIFOLIA HBK. Leaves very sharply and doubly 
serrate: flowers not densely aggregated : tube of the calyx short, 
campanulate, obscurely 2-3-nerved at each sinus.—Nov. Gen. et 
Spec., ii, 337, t. 169.—Common: San Luis Potosi, Schaffner, 
750; Parry and Palmer, 686; Valley of Mexico, Bourgeau,; Zim- 
apan, Coulter, 1357; Orizaba, Seaton, 464; State of Mexico, 
Pringle, 5335; Guanajuato, Dugés, 387; Oaxaca, Pringle, 4661 ; 
