VOL. 5] Plants from Sinaloa, Mexico. 197 
This palm is small and never becomes more than about twenty 
feet high. The petiole of my specimen is only 1 cm. wide. The 
dry fruit in appearance is much like that of £. edudis, but the 
excavation in the albumen is larger. The flowers are unknown. 
Abundant near Cofradia. 
Sabal sp. A handsome palm growing near Cofradia. 
Washing tonia Sonore Watson. A fewslender palms, probably 
belonging to this species, grow on the Plaza of Culiacan. 
Tradescantia Palmeri Rose. Culiacan. 
_ Echeandia nodosa Watson. Culiacan, Cofradia. 
Pitcairnia monticola. Acaulescent: leaves linear, 4-6 mm. 
wide below the middle, 3-3.5 dm. long, attenuate to each end, 
margins entire, more or less flocculent-pubescent: the 2-dm. long 
peduncle and linear-acuminate bract-leaves white with a de- 
ciduous tomentum: lower bract-leaves armed with short, recurved 
spines: flowers 10-14, in a simple raceme 6-8 cm. long; pedicels 
about 8 mm. long; petals twice the length of the 2-cm. long 
sepals: bracts nearly as long or exceeding the sepals. 
Growing on the ground about the summit of Cerro Colorado. 
The color of the flower-bracts and sepals is light red and probably 
the petals when fresh are also red. The species is nearest 
P. Jaliscana, differing in its white tomentose peduncle and 
raceme, longer flower-bracts and smaller flowers. ‘The specimens 
must have been more tomentose when young. 
Thalia geniculata 1, Growing in shallow ponds about 
Culiacan. 
Trophis sp. Perhaps a form of 7. Americana. ‘The spikes of 
pistillate flowers are 1-4-flowered. A small tree growing on 
Cerro Colorado. 
Populus dimorpha. A rough-barked tree with a trunk be- 
coming 2 m. in thickness, spreading branches and 20 m, or more 
high: leaves of the young trees linear-lanceolate, attenuate into a 
very short petiole, 1-3 cm. long, 2 mm. wide, serrate: leaves of 
older trees deltoid-ovate, long-acuminate, 10 cm. long, 7 cm. 
wide, crenate-serrate, truncate or cuneate at base: petioles flat- 
tened, 5 cm. long: pistillate aments about 7 cm. long, growing 
from wood of the preceding year, much exceeded by the young 
