ROBINSON AND GREENMAN.— GENUS MONTANOA. 509 
south as the Andes of Ecuador. Three natural subgenera are readily 
recognizable. 
Subg. 1. ErtocarpHa. Heads small, numerous, corymbose : ligules 
2 to 5 or 0: pales conspicuously, densely, and permanently silky-villous, 
the spinescent tip mostly recurved in fruit: leaves various, 3-nerved. — 
Eriocarpha, Cass. 1. ¢. Montagnea § Eriecarphe, DC. Prodr. v. 564. 
Eriocoma, HBK. Nov. Gen. & Spec. iv. 267. — Seven. species, all 
Mexican. 
* Ligules none: disk-flowers only 3 or 4, 
1. M. anomala. Branches lignescent, pithy, obscurely 4-angled, 
striate, retaining only short and sparse remnants of a pubescence which 
in the early stages of growth is evidently copious and silvery : leaves 
Opposite even up to the inflorescence, petiolate, the uppermost (the only 
ones known) suborbicular, broader than long, 4 cm. in length, 5 em. in 
breadth, mucronulate-denticulate, not lobed, puberulent and scabrous 
above, rusty-tomentose beneath: panicle round-topped, 1.8 dm. broad ; 
the branches and linear bractlets tomentose ; heads crowded ; involucral 
scales about 5, uniseriate, linear to linear-lanceolate, silky-villous on the 
outer surface: corollas densely pubescent except on the tube below. — 
Montanoa sp. Hemsl. Biol. Cent.-Am. Bot. ii. 166, where remarkable 
character is noted. — Collected by Bourgeau in the Valley of Cordova, 
Vera Cruz, Mexico, 16 March, 1866, no. 2057. 
* * Ligules present, (2 to) 5; disk-flowers usually more numerous. 
+ Bracts of the involucre, during anthesis, 2.5 to 4 mm. long. 
++ Leaves ovate, ovate-deltoid, or lanceolate, sometimes crenate-toothed and 
hastate, but not otherwise lobed; petioles wingless. 
= Leaves crenate-dentate, with base mostly obtuse, truncate, or cordate. 
-” 2. M. rtorieunpa, Sch. Bip. Branching shrub, 1.5 to 2.5 m. high: 
branches terete, striate, tomentose, at length glabrate: leaves all or nearly 
all opposite, ovate or more commonly deltoid-ovate, acute, rounded or 
More often truncate or broadly cordate at the base, shallowly crenate- 
dentate, 3 to 6 cm. long, often as broad, scabrous above, more or less 
sordid-tomentose beneath; petioles 1 to 2 em. long, tomentose, usually 
naked, rarely appendaged near the leaf-blade: panicle corymbose, the 
branches slender, much exceeding the leafy bracts: disk-flowers about 
15; ligules 5, from 5.5 to 7 mm. long. — Sch. Bip. in Koch, Wochenschr. 
vii. 406; Hemsl. Biol. Cent.-Am. Bot. ii. 165, in part (excl. pl. Bour- 
geau). Eriocoma floribunda, HBK. Nov. Gen. & Spec. iv. 268, t. 396. 
Montagnea floribunda, DC. Prodr. v. 564. — Eastern-central and South- 
