374 T. S. Brandegee. 
mucronate, attenuate at base into a petiole 2—6 mm long; the blade 
6—9 mm long and wide, glabrous: stipules lanceolate: inflorescence 
terminal and from the axils of the upper leaves, diffuse, many-flowered: 
bracts scarious, ovate-acuminate, with green midnerve: pedicels 5—10 mm 
long: sepals broadly ovate-acuminate with scarious margins: petals equall- 
ing the sepals, bifid nearly to the base into narrow divisions: seeds 
4—10, echinate: stamens 5. 
From its description, D. grandiflora seems to be near this species. 
Mexico: Collected near Salto de Agua, growing on dry hills. 
No. 1653. 
3. Thelypodium Purpusi T. S. Brandegee, 1. c., p. 232. 
Annual, glabrous throughout, erect, with few branches, 3—5 dm 
high: basal leaves oblanceolate, deeply, obtusely, sinuately lobed, 5—7 cm 
long, 1 em wide, attenuate at base into a petiole; cauline leaves auriculate- 
clasping, the margins sharply sinuate-toothed or the uppermost entire, 
long-attenuate to the apex: petals tinged with purple, 5 mm long, a third 
longer than the purple, white-margined sepals: stigma circular: silique 
nearly erect, not stipitate, 6—7 cm long: pedicels 5—6 mm long: cotyle- 
dons oblique. 
Mexico: Collected on Sierras Pata Galana and Parras, Coahuila, 
February and March, 1905. No. 1329. 
4. Lepidium monticola T. S. Brandegee, l. c., p. 232. 
Branching, pubescent stems 4—3 cm long, numerous from an in- 
durated root: leaves pinnate, the blade 5—7 mm long and about as wide, 
sparingly pubescent; pinnae laciniately lobed; petiole 8—12 mm long, 
bearing a few hairs: racemes numerous, 2—4 em long, densely flowered: 
flowers on pedicels 2—3 mm long: sepals ovate, less than 1 mm long: 
petals shorter, very narrowly linear-spatulate, white: stamens 2, shorter 
than the petals: capsule 2 mm long and nearly as wide, slightly winged 
at apex and minutely notched: cotyledons incumbent. 
The specimens are very mature, and most of the leaves have fallen. 
A few young branches still retain some belated flowers. The plants 
seem to perish after having matured their fruit and to be winter annuals 
or biennials. 
Mexico: Collected on Popocatepetl, growing in gravelly soil about 
timber-line. No. 1649. 
5. Cardamine macrocarpa T. S. Brandegee, l. c., p. 233. 
Annual, glabrous, stems erect, rarely branched, slightly wing-angled, 
about 1 dm high: cauline leaves 5 —7 cm and less long, 5—7 foliolate; 
leaflets oblong, deeply parted into 5—7 mucronate lobes; radical leaves 
similar, with larger, less deeply parted leaflets: fruiting raceme !/, the 
height of the plant: petals greenish white, 1 mm wide, 5 mm long, ex- 
ceeding the calyx lobes: pods erect, 3—4 cm long, 1,5 mm wide, acu- 
minate, slightly stipitate: pedicels 5—8 mm long; cotyledons acumbent. 
Mexico: Collected on Sierra de Parras, Coahuila, March, 1905. 
No. 1029. 
