244 
CONTRIBUTIONS TO BOTANY. 
laciniis alterna, tiibo inserta ; filamenta imo latiora, hie 
dense pilosa aut sparse pilosula, superne gradatim filiformia, 
exserta; antherce 2-lobaj, lobis oblongis, fusco-coriaceis, a 
medio segregatis, superne collateraliter adnatis, in sinu oscil- 
latorie affixis, lateraliter rima longitudinali alba utrinque de- 
hiscentibus : 'pollen granosum, globosum, granis in pulverem 
farinosum niveum immersis. Ovarium conico-oblongum, 
disco brevi sidFidtum, striatum, glabrum, semiseptis 2 oppo- 
sitis, parietalibus, utrinque bilamellatim reflexis, marginibus 
ovulum amplectentibus, hinc pseudo-4-loculare et 4-ovula- 
tum. Stylus simplex, exsertus, apice fere ad medium 2-tissus, 
ramis I'ectiusculis, stigmate subpeltato singidatim munitis. 
Drupa majuscula, globosa, calyce persistente suffulta : peri- 
carpium crasse coriaceum, utrinque nitens, maturitate deci- 
duum ; mesocarpium parcum , subcarnosum : cremocarpium 
persistens, sub-4-gonum, in achenia 4 primum bigemina, 
demum omnino solubile ; achenia ventre angulata, extus 
subplana aut paulo convexa, lateribus subalata, endocarpio 
dorsali amplo, spongioso-reticulato, e cellulis plurimis va- 
cuis elongatis radiatim centrifugis conflato, angulo venti'ali 
1-locularia, 1-sperma, loculis oblongis, subosseis, indehis- 
centibus, latere unico summum versus foramine parvo (intra 
canalem angustum vasiferum ebasi adscendentem) perforatis: 
columella centralis, principio ad basin bipartita, mox iterum 
fissa in carpopliora 4 rigida tenuia erecta ad summum 
adscendentia ; h^c subito reflexa, chordas filiformes liberas 
ad achenia infra medium afSxas simidant, et hoc modo 
achenia libera in aere suspensa sunt : semen teres, loculum im^ 
plens, e foramine suspensum, structura Bourrerice simile. 
Arbores et arbusculaj in America tropica et in Antillis indi- 
gence: ioXia, alterna^ ohlonga^ petiolata : paniculse coryTO^osce, 
terminaleSj soepius laxe ramosoe; flores alhi, mediocres^ inter- 
dum majores : drapse majusculce^ soepius rubree. 
1. Grematomia Cumanensis^ nob. ; — Rhamnus Cumanensis, 
Loejl. Itin. 182; — Ehretia exsucca, Linn. Sp. 275; Willd. 
Sp. i. 1078 ; DC. Prodr. ix. 508 ; — Ehretia cymosa, Willd. 
{non Poir. nec Thonn.) in R. & Sch. iv. 805 ; DC. 1. c. 511', 
— arborescens, ramis teretibus, fusco-cinerascentibus, gla- 
bris, lenticellatis ; foliis obovatis, acutis, imo cuneato-at- 
tenuatis, coriaceis, supra minute scabridulo-pilosulis, subtus 
pallidioribus, opace brunneis, glabris, minute rugulosis, 
marginibus paulo revolutis ; petiolo tenui, sulcato, limbo 
12-14-plo breviore : corymbis terminalibus, pedmiculatis, 
dichotome multiramosis, compresso-angularibus, glabris ; 
floribus brevissime pedicellatis, bracteolatis ; calyce coriaceo, 
