238 ON THE APOCINE.E.

Stamina exserta. Filamenta medio v. juxta basin tubi inserta, filiforioia. Anther <b sagittatae, medio stigmati cohaerentes, lobis posticis polline destitutis.

Ovaria 2, v. 1, biloculare. Stylus 1. Stigma dilatatum.

Squama 5, hypogyuae, distinct®, v. connatae.

Follicidi 2, distincti, v. cohaerentes.

Habitus. Frutices volubiles. Folia opposita. Mores 65] cymosi, v. racemosi, racemis saepe compositis, terminates v. interpetiolares, parvi, colore in variis vario.

Pataia. America Meridionalis et Australasia.

Obs. The American species of this genus, viz. Echites corymbosa Jaca. floribunda Sw. and spicata Jacq. differ considerably from the rest, which are natives of New Hol- land and New Zealand. Among these, the only published species is Periploca capsularis, For st. prod. n. 126. When the fruit of all has been examined, they will probably be divided in the following manner :

f Americana. Ovariis duobus. Folliculis distinctis. tf Australasienses. vario biloculari. Folliculis longi- tudinaliter cohaerentibus.

The genus is named in memory of Dr. James Parsons, the author of a Dissertation on the Analogy between the Pro- pagation of Animals and that of Vegetables, and of an unfinished work, entitled, " The Microscopical Theatre of Seeds." The Parsonsia of Brown, which Linnaeus reduced to Ly thrum, is a species of Cuphea.

60] LYONSIA.

Char. Corolla infundibuliformis, fauce tuboque esqua- matis, limbo 5partito, recurvo, laciniis aequilateris : aestiva- tione valvata.

Stamina exserta. Filamenta medio tubo inserta, fill— formia. Anther <b sagittatae, medio stigmati cohaerentes, lobis posticis polline vacuis.

Ovarium biloculare. Stylus 1, filiformis, apice dilatato.

Stigma subconicum.

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