84 APOCYNACEiE. Echites. 



the apex (half to barely an inch long) : corolla minutely puberulent outside ; its somewhat 

 funnelform throat and the obovate lobes as well as the narrow tube each about half an 

 inch in length. — Echites braohjsiphon, Torr. I.e. — Southern New Mexico and Arizona, 

 Wright, Schott, Thurber, Palmer, Rothrock. 



8. ECHITES, p. Browne, L. ('Ex('t:i<; is the serpent-stone; application to 

 this genus obscure.) — Twining woody plants ; with opposite leaves, and ter- 

 minal or lateral peduncles, bearing racemosely or sometimes simply cymosely dis- 

 posed flowers, of ample size ; the corolla white, rose-color, or more commonly 

 yellow. Nearly all tropical American, barely reaching the south-eastern shores 

 of the United States, in three species belonging to as many genera of Mueller, 

 hesitatingly adopted by Bentham ; perhaps better as two, viz., the following, here 

 arranged as subgenera. 



§ 1. Mandevillea. Corolla with cylindrical or cylindraceous tube abruptly 

 dilated above into an inflated- or oblong-campanulate wide throat. — Mandevillea, 

 Lindl. {Amhlyanthera, MuelL), with Rhabdadenia & Urechites, Muell. 



E. Andrewsii, Chapm. Glabrous or occasionally pubescent, low, usually twining : 

 leaves oval or oblong, often mucronate (about 2 inches long) : peduncles corymbosely 

 3-5-flowered ; lobes of the calyx as long as the proper corolla-tube, linear-subulate : corolla 

 yellow (2 inches long and the limb as broad) ; the much enlarged throat oblong-campanu- 

 late, hardly thrice the length of the narrow tube, little longer than the ovate spreading 

 lobes : anthers abruptly produced at apex into a long linear-filiform appendage : seeds 

 with a long filiform beak, the lower half of which is naked, the upper plumosely comose. 

 — Fl. 359 (1860). Echites suberecta, Andr. Bot. Rep. t. 187; Sims, Bot. Mag. 1. 1064, not 

 Jacq. E. neriandra, Griseb, Fl. W. Ind. 415 (1864). E. Catesbmi, Don? Neriandra sub- 

 erecta, A.DC. Prodr. viii. 422. Urechites suberecta, Muell. in Linn. xxx. 444, in parti — 

 S. Florida and Keys, Blodgett, Palmer. — E. suberecta, Jacq. & Griseb., is hardly distinguish- 

 able except by the longer throat and shorter lobes of the corolla, and tlie unappendaged 

 anthers! (W. Ind.) 



E. Sagrsei, A.DC. Much smaller than the preceding: leaves half to barely an inch 

 long, the margins more revolute : peduncles longer than the leaves, somewhat racemosely 

 flowered : calyx-lobes ovate-subulate and much shorter than the tube of the yellow (barely 

 inch long) corolla, the lobes of which are half the length of the throat : anthers bluntish, 

 unappendaged : beak of the seed plumosely-comose to the base. — Prodr. viii. 450 ; Griseb. 

 1. u. Rhabdadenia Sagrcei, Muell. 1. c. 4.35. — Pine Key, Florida, Blodgett. (W. Ind.) 



§ 2. EuECHiTES, A.DC. Corolla truly salverform, i.e. cylindrical up to the 

 limb, but the upper half (above the insertion of the stamens) abruptly somewhat 

 larger. — ■ Echites & Stipecoma, Muell. 



B. umbellata, Jacq. Glabrous, twining : leaves ovate or oval (2 Inches long), mucro- 

 nate or short-pointed, slightly cordate : peduncles exceeding the leaves, somewhat umbel- 

 lately .3-7-flowered : calyx short : corolla greenish-white, 2 inches long, narrow-tubular : 

 the tube abruptly swollen a little below the middle, thence tapering upwards, 4 times the 

 length of the roundish lobes : anthers rigid, slender-hastate, bluntish and unappendaged 

 at tip ; coma sessile on the top of the seed. — Amer. Pict. t. 29 (Catesb. Car. i. t. 68) ; 

 Chapm. 1. c. ; Griseb. 1. c. — S. Florida. (W. Ind.) 



9. TRACHELOSPifiRMUM, Lemaire. {TQapjlo?, miQfia, i.e. seed 

 with a neck : unhappily it has none or hardly any : the proposer, ignorant of 

 this, gave the name in reference to Rhynchospermum.) — Twining shrubby plants ; 

 with oval or oblong opposite short-petioled leaves, and small or smallish flowers 

 in terminal or lateral loose cymes : corolla white or greenish-white. — " Lemaire, 

 Jard. Fleur. i. t. 61 ; Moore & Henfr. Mag. Bot. ii. 113 ;" Benth. & Hook. Gen. 



