ICOSANDRIA MONOGYNI A. 
IL MONOG YNIA. 
-899. CACTUS. Gen. pl. 838. 
1. C, articulato-prolifer; articulis compressis ovatis, spinis 
setaceis.— Willd. sp. pl. 2. p. 943. 
Icon. Knorr thes. 1. t. F. a. í 
In pine-barrens and sandy fields: New Jersey to Caro- 
lina. h. June, July. v.v. Flowers large, yellow ; 
berries red, eatable, known by the name of Prickly 
Pios 
There are two or three more species growing on the 
Missouri ; but having had no opportunity to see them 
myself, I only mention it here, to draw the attention 
of the botanists in those regions towards them, 
. 400. BARTONIA. Sims in lot. mag. 1487. 
1. B. germine folioso, seminibus nudis, 
B. decapetala. Sims l. c. 
On chaiky soil and arid volcanic grounds, on the bor- 
ders of the Missouri. M. Lewis, d. July, Aug. 
— v. s. in Herb. Lewis. 
Radix biennis, fibrosa. Caul’s ramosus, teres. Rami 
patentes, scabri. Folia alterna, semi-amplexicaulia, 
oblonga, basi dilatata, superne sensim angustiora, in- 
ciso dentata seu subpinnatifida, utrinque scabra, glau- 
cescentia, Flores magni, albi, ex axillis superioribus, 
solitarii, peduncula'i. Pedunculi foliosi, folio breviores. 
Calyr superus campanulatus, 5-partitus; laciniis ova- 
tis, longissime acuminatis, peialis paulo brevioribus. 
Petala :0. alba, lanceolato-oblonga, acuta, unguicu- 
- lata. Stamina numerosa, filitormia, petalis breviora, 
Anthere luteæ, oblonge, biloculares, Germen infe- 
rum, oblongum, foliis pinnatifidis . calyce brevioribus 
ornatum. Styius staminibus longior, filiformis. Stig- 
ma simplex. Capsula cylindrica, calyce coronata, 
apice operculatim 5-valvis. Semina oblonga, plana. 
This beautiful plant, whose large white flowers open 
during the night and spread a most agreeable s 
was discovered in the year 1804, on the white blufts 
near the Maha village, by the late M. Lewis, Esquire. 
In 1807 I made a drawing and description of it, for 
^ 
Opuntia. 
ernata. 
