ROSE—-MEXICAN AND CENTRAL AMERICAN PLANTS. 295 
REISENBACHIA.“ 
The genus Reisenbachia is only known from Haenke’s material, 
which Presl has described and figured. Only a single species has been 
described and figured, this said to have been collected in Mexico, but 
no definite locality given. This is one of the plants which should be 
carefully looked for by Mexican collectors. 
° DIPLANDRA.? 
The only known species of the genus Diplandra was collected in 
west Mexico by the botanists of the Beechey Exploring Expedition. 
Since then no collection of it has been reported. We now have good 
specimens obtained by Dr. E. Palmer from Tepic, near the type 
locality. 
SEMEIANDRA.* 
The genus Semeiandra was first collected near Tepic by the botanist 
‘connected with the Beechey Exploring Expedition and afterwards by 
T. Coulter and B. Seemann in western Mexico. No recent collection 
of it has been reported. We now have it in the National Herbarium 
from Dr. E. Palmer’s collection made at Tepic, Nelson’s in Jaliseo, 
and Rose’s in Sinaloa. 
PELOZIA. 
Pelozia Rose, gen. nov. 
Sepals 4, linear, the lower one nearly distinct to the base, the three upper more or 
less united, the central one bearing a large gland a short distance above the base 
within, the two lateral ones forming with the lower one two small pouches or spurs at 
their base; petals 4, the two lower entire, attached to the calyx, the two upper 
borne on the three upper sepals; stamens 2, the lower petaloid, the upper perfect; 
style single, short; fruit a 4-celled capsule, shortly to narrowly oblong. Delicate 
annuals with thin alternate leaves, and small axillary flowers. 
This genus ix nearest Lopezia, but is well separated by the characters given. The 
fruit is not globular, but oblong, the sepals are not all distinct, but the three upper 
are united for a part of their length, and the lower sepal, while nearly distinct, forms 
with the adjacent sepals two short spurs. The three upper also bear a large gland 
within. The two lower petals are borne at the base of the flower, while the two 
upper are borne upon the sepals, are broader than the lower, and are not at all glan- 
dular at the top of the spur as in Lopezia. 
Type species 7’. laciniata, 
KEY TO SPECTES. 
vppe r petals entire; capsule elongated........---.-----------+--+-+--- P. clavata. 
Upper petals laciniate; capsule short.........------------------------ P. laciniata. 
«Reisenbachia Presl, Rel. Haenk. 2:36. pl. 54. 1836. Type species R. racemosa. 
bDiplandra Hook. & Arn. Bot. Beech. 291. pl. 60, 1839. Type species D. lope- 
zioides. 
cSemeiandra Hook. & Arn. Bot. Beech, 291. p/. 59, 1839. Type species S. grandi- 
flora. 
