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216 ON THE ASCLEPIADE.E.

Habitus. Frutex erectus. Folia opposita, basi supra biglandulosa. Flores racemosi, laterales. Patria. America meridionalis.

ASCLEPIAS. [Asclepiadis sp. Linn.

Char. Corolla 5partita, reflexa.

Corona summo tubo filamentorum imposita, 5phylla, foliolis cncullatis, e fun do exserentibus processuni aversum corniformem.

Anthem membrana terminate.

MasscB pollinis compressae, apice attenuato affixa3, pen- dulae.

Stigma depressum, muticum.

Folliculi heves. Semina comosa. 37] Habitus. Herbte erectae. Folia opposita, nunc alterna! vel verticillata. Umbel/a? interpetiolares.

Patria. America Septentrionalis.

Obs. The species of this genus which I have examined, are A. Syriaca, (most improperly so called, as it is a native of North America only), amcena, purpurascens, variegata, curassavica, nivea, elevata, parcijlora, incarnata, decumbent, verticillata, tuberosa, of Willdenow's Spec. Plant., and some unpublished species in the Banksian Herbarium ; and there can be little doubt that A. pulchra, cilrifolia, Mexicana, linaria, rubra, and all the species of Michaux, belong to it.

GOMPHOCARPUS. [Asclepiadis sp. Linn.

Char. Corolla opartita, reflexa.

Corona summo tubo filamentorum imposita, 5phylla, foliolis cncullatis utrinque unidentatis, intus simplicibus.

Anther ce membrana terminatae.

Massct pollinis compressae, apice attenuato afflxse, pen- dulse.

Stigma depressum, muticum.

Folliculi ventricosi, spinis innocuis echinati.

Semina comosa.

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