ROSE—MEXICAN AND CENTRAL AMERICAN PLANTS. 29) 
of the new descriptions have been in manuscript for seven or eight 
years. Two of the old species, viz: 2. myosotioides and DPD. popocate- 
petlensis, have been collected by the writer at their type localities in 
great abundance. The other two (2. joru/lens/s and LD. tolucensis), 
although known from descriptions only, seem to be quite distinct from 
any of these. 
Draba confusa Rose, sp. nov. 
Annual or perhaps biennial, erect, 8 dm. or so high, somewhat stellate-pubescent, 
basal leaves oblong-linear, 4 to 5 cm. long, obtuse; stem leaves similar, subentire; 
inflorescence strict, 1 to 2 dm. long; pedicels spreading 3 to 10 mm. long; petals 
yellow, longer than the sepals; pods ovate-oblong, 10 to 12 mm. long, pubescent; 
style prominent, less than | mm. long; stigma broad; cells each 4 to 6 seeded. 
Collected by C. G. Pringle under cold cliffs of Sierra de las Cruces, altitude 3,600 
meters, October 7, 1895 (no, 5260). 
This was distributed as D. inyosotoides, from which it is abundantly distinct in its 
pods, style, ete. 
Draba mexicana Roxe, sp. nov. 
Biennial or perhaps perennial, more or less branching, more or less. stellate- 
pubescent; basal leaves not seen; stem leaves scattered, oblong or the upper ones 
linear, obtuse, few-toothed, nearly glabrous; inflorescence open, elongated, | dm, 
long; pedicels 5 to 7 mim. long; sepals orbicular, tinged with purple, glabrous; petals 
longer than the sepals, pale yellow; pods ovate, 5 min. long, slightly pubescent; cells 
about 4-seeded; style distinct, less than | mim, long. 
Collected by C. G. Pringle on Sierra de Ajusco, Federal district, altitude 3,000 
meters, August 8, 1896 (no. 7385). 
This was distributed as 2. myosotoides, but differs from it in its longer style, and in 
its foliage, ete, 
Draba nivicola Rose, sp. nov. 
Low perennial growing 2.5 to 5 em. high with a thick caudex densely covered 
with bases of the old leaves; root thick, branching below, about 5dm. long; stems 
arising from the caudex numerous; leaves very many, spatulate, 10 to 14 mm. long, 
obtuse, entire, densely stellate-pubescent on both sides or becoming glabrate above; 
flowers bright yellow; sepals glabrous, oval, obtuse; petals a little longer than the 
sepals, obtuse, tapering at the base into a claw, 2mm. long; pod ovate, nearly gla- 
brous, 6 mm. long. 
Collected by EK. W. Nelson on Mount Orizaba, April 22, 1893 (no.4) and 1894 
(no, 280), and on Cofre de Perote, May, 1893; also by J. N. Rose on Mount Orizaba, 
July 26, 1901 (no. 5766, type). 
Itis very near J, orbiculata in habit and foliage, but very different in the shape 
of the pod, while the leaves are a little shorter and of different shape. 
Draba orbiculata Rose, sp. nov. 
In habit, folage, and pubescence this species is strikingly similar to D. niricola, 
but the fruit is so very different that I feel no hesitancy in describing it as also new. 
Pedicels rather stout, 5 mm. long, spreading; fruit orbicular, 2 mm. in diameter, 
glabrous: style thick, 0.5 mm. long, seeds 2 to each cell, attached near the top of 
cell; flowers not seen. 
Only known from specimens collected in porphyritie gravel of the crater of Nevado 
de Toluca by C. G. Pringle. September 2, 1892 (no. 4234). This was distributed as 
“Draba tolucensis TH. B. K. 2’? I feel convinced that D. toducensis must be quite dis- 
tinct from the above. 
