THE BOTANY OF THE ROUTE. 
43 
"ENDOLEPIS, N. Gen. 
"Flowers monoecious; the male ebracteate, in glomerate terminal spikes; the female solitary 
and sessile in the axils of the leaves. 3Iasc. Calj'x gamosepalous, nrceolate, five-lobed; the lobes 
thin, triangular— subulate strongly inflexed, each with a fleshy, protuberant gibbosity at its base 
outside. Stamens five; filaments subulate, short; anthers oblong, large, scarcely exserted. No 
rudiment of an ovary. Fern, bibracteate; the bracts ovate, membranaceous, inappendiculate, 
united to the summit, forming a compressed theca which incloses the flower. Calyx of three 
distinct sepals. No stamens nor staminodia. Ovary ovate; styles two, distinct, filiform, slightly 
exserted; ovate erect. Utricle ovate, compressed, enclosed in the membranaceous theca. Seed 
ovate, rostellate at the summit, vertical, embryo nearly annular, very slender; radicle superior. 
An annual low herb, in aspect resembling Chenopodium or Atriplex, with lanceolate acute, 
entire leaves. 
" Endelopis Suckleyi, n. sp. [Plate III.] As a genus this is characterized among Afriplices 
both by the remarkable calyx of the staminate flowers, and by the presence of a manifest 
three-sepalous calyx in the fertile flowers. The species is dedicated to my former pupil, the 
discoverer. ' ' — Torrey. 
Obione canescens, Moquin. 
Obione argentea, Moquin? 
Obione Suckleyana, Torr., n. sp. (Plate IV.) "Annual, stem branching, prostrate; 
leaves suborbicular on long petioles, acutely repand-dentate, pale-green both sides, nearly 
glabrous; glomerules axillary, monoecious bracts of the sessile fruit deltoid, united to the summit, 
the margin narrowly winged, crenate-denticulate. Very distinct from every other North 
American species of Obione, but having some resemblance to 0. argentea. It is remarkable for 
the roundish leaves, very long petioles, and the large and much compressed nearly glabrous 
fruit. The male flowers were tetramerous." — Torrey. This was collected in the Milk River 
valley, August 19. 
Eurotia lanata, Moq. 
Eriogonum flavum, Nutt. 
Polygonum aviculare, Linn. 
Polygonum ramossissimum, Michx. 
Polygonum Virginianum, Linn. 
Polygonum amphibium. Linn. 
Rumex venosus, Pursh. 
Rumex crispus. Linn. 
Rumex fersicarioides. Linn. 
Rumex salicifolilia, Weinm. 
Shepherdia argentea, Nutt. Yellowstone river, Nebraska. 
Comandra umbellata, Nutt. 
Euphorbia marginata, Pursh. 
Euphorbia platyphylla. Linn. 
Urtica dioica. Linn. 
PiLEA pumila, Gray. 
MoRUS rubra, Linn. Vermillion river, Mo. 
Populus monilifera. Ait. 
