66 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Type collected by Aublet on the banks of the Crique des Galbis, French 
Guiana, in the month of May. 
DISTRIBUTION: Rather frequent in the forests of French Guiana, but difficult 
to collect (Sagot). 
“This tree,’ says Aublet, “is called Pinaioua by the Garipons and the 
Galibis [Caribs]. They eat the fruit with delight, and it is of very good 
flavor.” 
GEANTHEMUM Safford, gen. nov. 
Aberemoa, section Geanthemum R. FB. Fries, Vet. Akad. Hand]. Stockholm 34°: 
24. 1900. 
Arborescent, the younger parts clothed with stellate-lepidote indument; in- 
florescence for the most part issuing from slender subterranean branches; 
flowers hermaphrodite, 1 to sev- 
eral borne on a common peduncle 
or lateral branchlet bearing many 
small scalelike bracts; calyx 3- 
parted, stellate-lepidote on the out- 
side; corolla 6-petaled in 2 series, 
the outer petals open in estivation, 
the inner ones imbricate; stamens 
all fertile, their connectives not 
swollen, produced, nor dilated 
above the two short sessile pollen 
sacs; pistils (ecarpels) free in the 
flower, the ovary with a single 
basal ovule, as in Annona, the 
style terminating in an incurved, 
acuminate or linear, glabrous 
stigma; fruit composed of closely 
crowded but distinct carpels, easily 
separable, as in the genus Du- 
guetia; seeds resembling those of 
Annona. (PLATE 41.) 
Type species, Geanthemum rhi- 
zanthum (Hichl.) Safford. 
This genus resembles Raimondin 
in the form of its stamens, but 
differs from it in having bisexual 
flowers, fruit with easily separable 
carpels, and a stellate-lepidote in- 
dument. In the two latter features | 
it resembles Duguetia, but it differs radically from that genus and from Annona 
in its peculiar stamens. In this genus are included the following two species: 
Geanthemum rhizanthum (Eichl.) Safford. 
Anona rhizantha Hichl. Jahrb. Bot. Gart. Mus. Berlin 2: 320, pl. 11. 1883. 
Aberemoa rhizantha R. BE. Fries, Vet. Akad. Handl. Stockholm 34°: 24. 1900, 
Duguetia rhizantha Huber, Bol. Mus. Paraense 5: 356. 1908. 
Type collected near Cascadura, in the mountainous region of Serra da Bica, 
Province of Rio de Janeiro, Brazil, in January, 1882, by Gustavus Peckolt. 
Fia. 75.—Uvaria sessilis. Inflorescence, stamens, 
and fruit. After Velloso. Scale 4. 
EXPLANATION OF PLATE 41.—Reproduction of drawings of type after Eichler. 1, Trunk 
with rootlike flowering branches; 2, leaf; 3, diagram of flower; 4, inflorescence; 5, in- 
florescence branchlet, showing distichous bracteole scars; 6, longitudinal section through 
