ROBINSON AND GREENMAN. — MEXICAN PLANTS. 49 
Florestina platyphylla. Mr. Pringle’s no. 4975, collected on 
Monte Alban, Oaxaca, and described in the Am. Jour. Sci. ser. 3, L. 
156, as Schukhria platyphylla, appears upon further examination to be 
better placed in Florestina. 
Dysop1a seRRATIFoLIA, DC. A specimen collected by L. C. Smith, 
below Jayacatlan, at 3,500 feet altitude, 9 February, 1895, corresponds 
with Ghiesbreght’s no. 519, and with a fragment of the type from the . 
De Candollean Herbarium, in all respects, except in having the leaves 
mostly alternate, not opposite as hitherto described. The uppermost 
only are subopposite. 
Liasum Guasrum, Hemsl. (Biol. Cent-Am. Bot. ii. 232). This 
showy species, originally collected by Bourgeau, no. 1401, at Cuernavaca, 
in 1865, has now been rediscovered by Mr. Pringle in the same locality. 
His excellent specimens show the flowers to be bright orange-yellow and 
the leaves normally attenuate. Mr. Pringle notes that the plant attains 
a height of 15 feet. 
Liabum Pringlei. Half shrub, 3 or 4 feet high: stems terete, 
fuscous-tomentulose: leaves opposite, ovate, acute, mucronulate-denticu- 
late, green and puberulent above, densely white-tomentose and reticulated 
with brownish veins below, rounded and 3-nerved at the base, 3 inches 
long, two thirds as broad; margins revolute; naked petioles but 2 lines 
long: heads few, large, 1} inches in diameter, discoid: involucre cam- 
panulate, multiseriate; scales pale brown (in dried state), lanceolate, 
attenuate, slightly sericeous: flowers about 75 in a head, yellow, 10 lines 
in length: achenes 23 lines long, sericeous: pappus of elongated stramin- 
eous bristles and very short outer scales. + Collected by C. G. Pringle, 
on mountains near Lake Chapala, Jalisco, altitude 7,000 feet, 18 October, : 
1895, no. 6215. Ng 
Cacalia peltata, HBK., var. Conzattii. Stem 1 to 3 feet high : 
inflorescence lax, 1-20-headed; heads 25—40-flowered ; involucre 12- 
phyllous ; calyculate, scales covered with a densely spreading pubescence. 
— Collected .by Professor C. Conzatti on the Sierra de San Felipe, 
Oaxaca, altitude 9,000 feet, 29 November, 1895, no. 27; also by C. G. 
Pringle in the same region, altitude 10,000 feet, 13 December, 1899, 
no. 6238. 
Senecio prionopterus. Erect herb, 1 to 3 feet in height: stems 
_ Somewhat flexuous, green, striate, slightly flocculose, rather broadly and 
interruptedly winged by the decurrent bases of the leaves, simple to the — 
Corymbose-paniculate flat-topped inflorescence : leaves lance-oblong, *~ 
tenuate to a very sharp narrow apex, irregularly serrate-dentate, half inch 
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