290 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Poa infirma H. B. K. Nov. Gen. & Sp. Pl. 1: 158. 1815. 
Collected at an altitude of 3,210 meters, August 22, 1901 (no. 6246). 
This specimen is very small, none of the plants exceeding 7 em. in height, but there 
is little doubt as to the identity of our plant with the form described by Kunth as 
Poa infirma, a species closely related to Poa annua L. 
Festuca livida (H. B. K.) Willd. in Spreng. Syst. 1: 253. 1825. 
Bromus lividus HW. B. K. Noy. Gen. & Sp. PL 1: 150. pl. 689. 1815, 
Schedonorus lividus R. & S. Syst. 2: TOT. 1817, 
Festuca grandiflora Steud. Syn. Pl. Glum. 1: 3811. 1854. 
Helleria livida Fourn. Mex. Pl. 2: 129. L881. 
A very distinct and interesting species, badly figured by H. B. kk., but finely illus- 
trated by Hemsley.¢ The type of this species was collected on Mount Toluca. — It is 
reported from Mount Orizaba, at an altitude of 13,000 to 13,500 feet, ‘the last phe- 
nogamous plant’? (Linden), ‘‘the limits of vegetation’? (Galeotti). 
Collected at an altitude of 4,125 meters, August, 1901 (no. 5978). 
Festuca amplissima Rupr. Bul. Acad. Brux. 92: 236. 1842, nom. nud. ex Fourn. 
Mex. PI. 2: 125. 1881. 
Collected at an altitude of 2,970 meters, August 22, 1901 (no. 6262), 
Festuca aequipaleata Fourn. Mex. Pl. 2: 125. 1881. 
Collected at an altitude of 3,575 meters, August 8, 1901 (no. 6297). 
CYPERACEAE. 
NOTES ON CAREX MADRENSIS AND THE (CAREX PINETORUM OF 
LIEBMANN. 
Carex madrensis Bailey, Bot. Gaz. 25: 270. 1898. 
Collected by J. N. Rose, August 16, 1897 (no. 2857), near the top of the Sierra 
Madre, in the extreme southern end of the State of Durango. No exact station can 
be given for the reason that it was found in the uninhabited parts of the mountains 
many miles from any town or village. . 
The original description of Dr. L. H. Bailey follows: 
One of the Indicae, and, with C. schiedeana Kunze, making a well-marked section 
of that group: slender, a foot to 18 inches high, with short and flattish leaves; spikes 
about four, aggregated, or the lowest one or two remote and long-peduncled from 
sheaths, a half inch long, and ovate or nearly globular, the apical staminate part 
very short; perigynium obovoid and slightly excurved, distinctly and abruptly 
beaked, the orifice slightly toothed, the body trigonous and strongly few-nerved, 
somewhat scarious, but not hairy or pubescent; scales broad and ‘blunt, with a 
short cusp, brown, with a dorsal nerve, shorter than the light-colored perigynium. 
Differs from (. schiedeana, its nearest relative, in its much laxer habit and softer 
leaves, the absence of long bracts subtending the upper spikes, the more scattered 
spikes, the long peduncles of the lower spikes, the glabrous less-nerved perigynium, 
and the broader and blunter scales. 
Carex peucophila Holm, nom. noy. PLare LXITT. 
Carer pinetorum Liebm. Vidensk. Selsk. Skr. V. 2: 268. 1851, not Willd. Linnzea 
10: 265. 1836. 
Collected by J. N. Rose, August 7 and 8, 1901 (no. 6994), on Mount Popocatepetl 
just below timber line under pines (P. hartwegiana), where it is quite common, The 
type of this species came from Mount Orizaba at about the altitude of my plants. 
It has heretofore been resting in C. festira Dewey, a very different plant. This 
species has only been collected a few times, has never before been reported from 
Mount Popocatepetl, and has not heretofore been represented in the National Her- 
barium. The material was referred to Dr, Theodor Holm, who has prepared the 
accompanying note and illustration. 
« Biol, Centr. Am, 8: pl. 102 b. 
