74 ON SOUTH-AMERICAN APOCYNACEA, 
crenate on the margin; 2 ovate-oblong follicles are described as divaricately reflexed, 
and acutely recurved at the apex, rugulose. 
STEMMADENIA. 
This genus was established by Mr. Bentham in 1844, for a few handsome trees with 
large yellow or white campanular flowers, distinguished by a calyx of 5 large imbrieated 
sepals, furnished inside at their base with numerous (near 100) small lanceolate scales, 
closely arranged in several series, which gave rise to the generic name. To this genus I 
have referred the Tabernemontana grandiflora of Jacquin, which fully accords in its 
characters with the typical species. Miss Drahe's drawing in Mr. Bentham's plate 44 
correctly represents the flower with the border-segments convoluted sinistrorsely, as I 
have found them in all the other species examined by me; and so it is rightly stated in 
Mr. Bentham's generie character; but in a note he adds, by mistake, that Miss Drahe 
had erred in this respect in her drawing. 
STEMMADENIA, Benth.: Tabernemontane sp., Jacq.: Odontostigma, Rich. (non Zoll): Sepala 5, 
majuscula, obtuse oblonga, inequalia, quorum 3 exteriora breviora, bracteolis 2 suffulta, sub- 
membranacea, intus squamulis lanceolatis numerosissimis pluriseriatis munita. Corolle tubus calyce 
2plo longior, latiuscule cylindricus, imo paullulo latior, superne campanulatim ampliatus; seg- 
menta 5, ampla, oblique rotundata aut dolabriformia, in zestivatione simpliciter sinistrorsum convoluta. 
Stamina 5, infra medium tubi subsessilia ; anthere subcoherentes, cuspidatee, imo furcis 2 acutis aut 
obtusiusculis armate. Discus e lobis 5, marginibus confluentibus, apice crenulatis, suburceolatus, 
ovaria semitegens. Ovaria 2, distincta, oblonga. Stylus simpliciter teres; clavuncula incrassata, 
5-sulcata, imo membrana peltata munita. Stigmata 2, terminalia, parva, subglobosa. Folliculi 2 
(sec. Jacq.), valde divaricati, subcompresse ovati, retrorsum rostrati. Semina Tabernemontane. 
Arbuscule intertropice, plerumque Mexicane ; folia opposita, elliptica, petiolata ; racemi breves, 
pauciflori, in dichotomiis foliorum terminales ; flores majusculi, speciosi, flavi aut albi. 
l. STEMMADENIA GLABRA, Benth. Bot. Sulph. 425, tab. 44. In America centrali, sinu Fonseca (Hinds) : 
non vidi. 
A plant with erect stoutish branches and bifurcated branchlets, without stipules; 
leaves opposite, obovate, obtuse at the base, with a short, suddenly acute constriction at 
the apex, membranaceous, with subundulate margins, glabrous, green above, more pallid 
below, costa and 12-16 pairs of nerves prominulent, 5-6 in. long, 21-3 in. broad, on 
petioles 2—4 lines long, sulcate, with the margins conjoined by a transverse ridge across 
the node; panicle oh seated in the dichotomy of the branchlets; peduncle erect, 
1 in. long, bearing 3-5 large handsome flowers, on pedicels 4-6 lines long, minutely 
bracteolated at the base; sepals 5, unequal, 2 inner oblong, nearly an inch long, 3 outer 
more ovate and shorter, very imbricate, erect, furnished inside with near 100 lanceo- 
late scales closely arranged in 2 series, supported at the base by 2 membranaceous oval 
bracts 3 lines long. Corolla tubular, nearly 3 in. long; tube 21 lines long, narrower in 
the lower half, suddenly swelling above into a broader but tubular form, and 7 lines 
wide in the mouth, below which are 5 longitudinal plicatures alternate with the stamens; 
segments gibbously oval, crenulate, 14 lines long, 12 lines broad, sinistrorsely con- 
