64 



DIPLADENIA crassinSda. 



Knob-jointed Dipladenia. 



PENTANDRIA MONOGYNIA. 

 Nat. ord. Apocynace.e. 



DIPLADENIA, Alph. D.C. Calyx 5-partitus, lobis basi interne utrin- 

 que 1-2-glanclulosis ; glandulis nunc ligulatis vel squamosis. C'oro//a hypo- 

 craterimorplia vel tubo basi cylindrico et superne infundibuliformi, circa 

 originem staminum hispida ; fauce exappendiculata ; lobis sestivatione sini- 

 strorsuni convolutis. Antherce subsessiles, in superiore parte tubi vel medio 

 aut sub media parte ubi tubus latior fit insertse, sagittatse, medio stigmati 

 adhserentes, apicee acuminatee vel membrana acuta terminatse. Glundulce 

 nectarii 2, cum ovariis alternantes, obtusee, singulse a duabus conuatis ple- 

 rumque constantes, quinta glandula in Echite uno ex ovaiuis opposita defi- 

 ciente. Ovana 2, nectario ssepius longiora. Strjlus \. *S'^<V/?i«« globulosum, 

 inferne membrana reflexa umbraculiformi (an semper 1) stipatum. FoUiculi 



et semina ut in Echite. Frutices scandentes, vel scppius svffrutices aut 



herbcB basi svffrutescentes erectce, Americse meridionalis incolse foliis oppositis, 

 integris, scepe anyustis, utrinque basi setis glandulisve ptluribus loco stipularum 

 stipatis, pedicellis axillaribus, nunc in racemum terminalem approximatis, 

 fioratione centripeta ; corollis sapius purpureis. — Alph. DeCand. Prod. 1. 481. 



D. crassinoda ; glaberrima, caule ramoso nodose, foliis lanceolatis acutis v. 

 acuminatis basi acutis utrinque nitidis coriaceis, racerais axillaribus com- 

 pressis subsexiioris elongatis, lobis calycinis lanceolatis acuminatis tubi 

 parte cyHndrica paul5 brevioribus pedicello duplo tripove brevioribus, 

 corollee tubo infra medium campanulato, lobis obovato-orbicularibus. — 

 Alph. DC. I. c. 48G. 



Echites crassinoda, Gardner in Hook. Journ. bot. 1. 544. 



Echites carassa, Hort. 



Mons. Alphonse DeCandolle in his monograph of the 

 Apocynaceous order, has separated various plants from the 

 old Linnsean genus Echites, and among others the E. splendens 

 and atropurpurea, two well known garden species, which he 

 places in a genus called Dipladenia, from 5i7rAoy, double, and 

 d8T)u, a gland, in allusion to the two tubercles which are 

 found at the base of their ovary. This genus, to which 

 twenty species in all are referred ; also contains the plant 



