398 MR. J. MIERS ON THE HIPPOCRATEACEA OF SOUTH AMERICA. 
sub-3-denticulato. In Brasilia, Rio San Francisco, in deserti sylvis (Martius): v. s. 
in herb. variis, prov. Goyaz, prope Natividade, in campis siccis (Gardner, 3045). 
A species near the preceding, a native of the Sertáo region, or dry wood-district, that 
extends from Natividade to the valley of the Rio San Francisco. It appears to bea 
small tree, with straight upright branches, having nodose axils by turns + and ¿ in. apart» 
very rarely quite opposite. The leaves are 23-32 in. long, 2-14 in. broad, on a petiole 
3-4 lines long.’ About ten flowers are closely agglomerated in each axil, upon pedicels 
2 lines long; the flowers are all in bud in the several specimens I have seen; but the 
most matured are easily expanded by a little force, and when thus opened they are 
21 lines in diameter, upon a pedicel 14 line long. 
10. THERMOPHILA. 
This genus is proposed for a few species, natives of Guiana, distinguished by their un- 
usually large leaves, and an inflorescence consisting of geminate axillary panicles, with 
larger flowers than those of Sarcocampsa and Peritassa, having anthers of two distinct 
cells, as in those genera. The flowers are more or less glabrous, with expanded oblong 
petals and a fleshy conical or pulviniform disk, expanded by a broad basal margin, as in 
Prionostemma and Raddia, only thicker: the three stamens are inserted within the disk, 
and are twice its length, or longer: the ovary is trigonous and depressed, surmounted by 
a long subulate style and an almost obsolete stigma: it differs from all the preceding 
genera in having only one or two ovules, erect in each cell of the ovary, and a small 
oblong, verrucated, indehiscent, 3-celled drupe, with a single erect seed in each cell. The 
name of the genus is derived from 6epuóv, calidum, and @uéw, amo, because the plants 
thrive in the more torrid portion of equatorial America. 
THERMOPHILA, nob. 
Flores hermaphroditi. Sepala 5, parva, rotundata, carnosa, margine t b integra. Petala 5, 
alterna, 4-plo longiora, bue obtusa, veniens ESA ninio integra, vel obsolete erosa, 
glaberrima, opaca, sub disco inserta, demum expansa, cum apicibus reflexis, tamquam sepala vasibus 
spiralibus repleta, in æstivatione inter se arcte adhærentia et quincuncialiter valde imbricata. Discus 
carnosus, altiuscule conicus, vel brevior et pulvinatus, imo late expansus, hine crassiusculus et sub- 
pentagonus, glaber, subgranulatim opacus, persistens. . Stamina 3, intra discum inserta, longitudine 
petalorum, persistentia: filamenta anguste complanata, imo paulo latiora, crassiuscula, erecta, 
glaberrima: anthere parviuscule, 2-lobæ, lobis apice adnatis, oblongis, obliquis, imo valde di- 
vergentibus, sinu extrorsum apicifixis, utroque rima longitudinali oblique dehiscente. Ovarium 
conice trigonoideum, depressum, liberum, cavitate disci fere occlusum, triloculare: ovula in quoque 
loculo 2, axi collateraliter suspensa; stylus subulatus, longiusculus ; stigma fere obsoletum, e den- 
tieulis 3 minutissimis. Drupa oblonga, mole submediocri, ad basin disco staminibusque suffulta ; 
pericarpium crassum, durum, extus verruculis tuberculatum, 3-loculare, dissepimentis subtenuibus, 
loculis l.spermis: semen oblongum, loculum implens, suspensum; infegumentum tenuissimum ; 
embryo exalbuminosus, cofyledonibus carnosis ovalibus, subcompressis, axi parallelis, radicula bre- . 
viter conoidea, supera. 
Arbusculæ Guianenses, ramose : folia opposita, majuscula, oblonga, coriacea, breviter petiolata : panicule 
