216 ON SOUTH-AMERICAN APOCYNACEZ. 
19. TEMNADENIA RIEDELIHI, nob. : Hemadictyon Riedelii, Müll. l. c. p. 170. In Brasilia, prov. S. Paulo, 
ad Sorocaba (Riedel 1973) : v. s. in herb. meo Campinas (Weir 75). 
Weir's plant is from the same province as that of Riedel’s. It is a climbing species, 
with stoutish, flexuose, pale, subfistulous branches, covered with a short yellow tomentum, 
with dilated axils 5 in. apart, furnished along the transverse ridge with several pectinoid 
stipules; leaves ovate, at the base suddenly and acutely constricted upon the petiole, 
with an abrupt acute acumen, submémbranaceous, pallid green above, with short dense 
yellow pubescence on the flattened midrib and on 5-6 pairs of arching prominulent 
nerves and transversely reticulated veins, beneath of a yellowish hue, shortly tomen- 
tellous, especially on the little prominulent nerves and veins, 44 in. long, 23—3 in. broad, 
on stout floccose petioles Y lines long; corymb solitary and lateral at the uodes, with a 
peduncle rising out of an involucel of scales, 1 in. long, somewhat 2-branched, each 
branch laxly flowered, puberulous; flowers mostly geminate upon slender pedicels 
6 lines long, with corresponding opposite linear-oblong bracts of the same length; sepals 
oblong, acuminate, pilose on both sides, 5-7 lines long, 2 lines broad, each with an inner 
broadly ovate truncate scale denticulate at the apex; tube of corolla broadish, cylin- 
drical, reddish, glabrous, 6 lines long, thickish in the mouth, without appendages ; 
segments oblong-ovate, inequilateral, 4 lines long, 24 lines broad, glabrous; stamens 
inserted upon 5 pilose lines in the middle of the tube; anthers acuminate, 31 lines long, 
with 2 basal divaricate prongs 1 line long. 
20. TEMNADENIA TENUICULA, nob.: ramis tenuiculis, teretibus, subglabris; axillis remotis, dilatatis, 
cum stipulis parvis acutis 2 vel plurimis pectinatim dispositis : foliis lanceolato-oblongis, imo ob- 
tusis et obsolete cordatis, apice gradatim angustatis et breviter acuminatis, supra fusco-viridibus, 
nitidulis, parenchymate ruguloso, nervis tenuissimis, arcuatis, subimmersis, subtus fere concoloribus, 
opacis, nervis vix prominulis; petiolis tenuibus, patentibus : corymbo laterali, solitario, quam folium 
breviore; pedunculo crassiusculo, imo squamulis involucellato, apice 2-3-farcato, ramis congestim plu- 
rifloris et capitatis ; pedicellis tenuibus, quam calyx duplo longioribus, bracteola parva acuta suffultis ; 
sepalis lineari-oblongis, submembranaceis, acutis, intus squama late triangulari munitis; corolla 
subparva; tubo cylindrico, quam calyx duplo longiore, fauce interrupte callosa, appendicibus nullis ; 
segmentis insequilatere ovatis, acutis, tubo } brevioribus; staminibus annulo piloso in medio tubi 
insertis ; antheris linearibus, acutis, faucem vix attingentibus, imo furcis 2 incurvis brevibus armatis, 
dorso pruinosis; disco urceolato, in lobos 5 apice denticulatos inciso, quam ovarium longiore. In 
Brasilia: v. v. ef sicc. in herb. meo (no. 4050), Rio Paquequer, in montibus Organensibus. 
I found this plant in flower in Jan. 1838. It approaches 7. solanifolia in habit, dif- 
fering in its smaller leaves, and flowers aggregated in a more capitate head ; its branches 
are only $ line thick, its axils 33-44 in. apart, with many stipules 4 line long; leaves 
133 in. long, 3-4 in. broad, on petioles 2-2} lines long; corymb 11 in. long; peduncle 
bare for ¿ in., its branches many-flowered from the base on pedicels 4-5 lines long; 
sepals 23-3 lines long, 1 line broad; tube of corolla narrower in the middle, 5 lines long; 
segments 3 lines long, 2 lines broad ; anthers 21 lines long. 
21. TEMNADENIA ANNULARIS, nob.: Prestonia annularis, G. Don, Dict. iv. p.84: Echites annularis, Linn. 
fil. Suppl. 166: Hemadictyon? annulare, A. DC. l. c. p. 428. In Surinam: non vidi. 
A climbing species, with opposite petiolate leaves 1 foot long; corymb axillary, on a 
