ON SOUTH-AMERICAN APOCYNACEA. : 117 
of 5 expanded obliquely ovate segments, somewhat shorter than the tube, glabrous; 
disk of 5 erect lobes as long as the 2 ovaries; 2 straight erect follicles, 10 in. long, 
91 lines broad ; seeds scarcely observed. "These characters are quite analogous to those 
of Elytropus ptarmica, differing in an inflorescence of 8 instead of 2 pedicellate 
flowers. 
ERIADENIA *. 
A peculiar genus, founded upon an erect shrub with opposite leaves, marked by 
immersed closely parallel nerves, as in Neriwm and Hancornia. In habit and inflores- 
cence it resembles Rhodocalyx, having rufescent sepals with parallel nerves, a long 
tubular corolla, its segments similarly contorse, sagittate anthers, a disk of 5 free 
fleshy lobes, a style with a similar clavuncle, follicles of the same shape and size; 
but it differs in many essential particulars, especially in the want of an apical coma in 
the seeds. 
ERIADENIA, nob. Sepala 5, ovata, parallele nervosa, extus pilosa, singula squama lata ciliata 2-3-lacinu- 
lata intus munita. Corolla hypocrateriformis, tubo anguste cylindrico, longo, recto, utrinque 
glabro, intus paullo infra faucem glandulis 5 breviter oblongis donato, limbi segmentis 5, glan- 
dulis alternis, inzquilateris, trapezoideo-linearibus, tubo «equilongis, intus horizontaliter plicatis 
et dextrorsum convolutis. Stamina 5, paullissime supra basin tubi inserta, subsessilia; anthere 
lineares, sagittatz, apice longe cuspidate, imo tenuiter parallele 2-furcate, medio extus puberule, 
intus anguste 2-loculares. Discus 5-lobus, lobis liberis, erectis, ovatis, extus brevissime pilosis, 
margine crebre ciliatis. Ovaria 2, ovata, disco equilonga, puberula. Stylus brevissimus, subvalidus, 
striatus, 2-suleatus, apice clavuncula conica 10-sulcata imo 5-dentatim expansa incrassato ; stig- 
mata 2, acute linearia, foliacea, erecta.  Folliculi 2, tereti-cylindrici, subcurvati, subtorulosi ; 
semina pauca, compressissima, lineari-oblonga, apice rostrata, subimbricata, hilo parvo centrali 
peltatim affixa, pilis rufulis rigidis densissime patentim villosa. 
Frutex Peruvianus ; folia opposita, ovata, patentissime et parallele nervosa, petiolata ; inflorescentia 
extraaxillaris, racemosa; pedicelli alterni, bracteolati; flores majusculi, rubri. 
ERIADENIA OBOVATA, nob. : ramulis subfistulosis, erectis, angulato-sulcatis, epidermide tenui laxa striata: 
foliis oppositis, cuneato-obovatis, apice rotundatis, et in acumen mucroniforme obtusum repente 
constrietis, coriaceis, marginibus integris revolutis, supra profunde viridibus, subnitentibus, nervis 
patentissimis crebre parallelis utrinque omnino immersis, costa sulcata, subtus flavide opacis, 
costa prominente; petiolo canalienlato, quam limbus 8plo breviore: racemo laterali; pedunculo 
foliis dimidio breviore; pedicellis circa 8, alternis, imo bracteolatis, calyce 2plo longioribus ; sepalis 
brevibus, obtuse oblongis, extus puberulis, marginibus glabris et membranaceis ; corolla hypocrateri- 
formi; tubo longe cylindrico; segmentis 5, imo trapezoideis, medio mucronatis, dein lineari- 
expansis, tubo subzequilongis, rubris: cæt. ut in char. generico. In Peruvia alta: v. s. in herb. meo 
et alior. Tarapota (Spruce 4303). 
Its straight branchlets have axils 1 in. apart; the leaves are 21—3 in. long, 14-14 in. 
broad, on rather slender petioles 4 lines long, united transversely by a line on each side; 
the peduncle is about 12 in. long, bearing about 8 or 10 alternate flowers on pedicels 
5 lines long, each with an acute ovate bract two thirds of its length; the sepals are 
2 lines long; the tube of the corolla 12 lines long, 1j line broad; segments 11 lines 
* Ab épor (lana), däin (glandula), from its hairy disk. 
