176 BOTANY OF THE VOYAGE OF THE SULPHUR. 
CoMMELYNACES. 
863, CommEtyNa agraria, Kunth, Enum. 4. p. 38.—San Blas, Acapulco, Realejo, Panama. 
864, ComMELYNA acuminata, Humb. et Kunth.—Kunth, Enum, 4. p. 38.—A single specimen, 
rather more downy than described by Kunth.—Between San Blas and Tepic. 
865. Commertyna celestis, Kunth, Enum. 4. p. 45.—Realejo. 
866. Commetyna elegans, Humb. et Kunth.—Kunth, Enum. 4. p. 55.—Panama and Guay- 
aquil. These specimens are smoother than those described by Kunth. There is also a small 
ey from Acapulco, and a tall narrow-leaved form from Guayaquil. ‘ 
867. ComMELyNa ? leiocarpa, sp. n., caule geniculato glabro, vaginis ore ciliatis, foliis ovatis vel 
ovato-lanceolatis glabris, pedunculis hinc hirtellis, spatha complicata, pedicello altero 2-3-floro altero 
minuto sterili, perigonii foliolis interioribus parum ineequalibus, fructu globoso nitido indehiscente.— 
Tiger Island, Gulf of Fonseca. 
Caules ultrapedales, basi procumbentes, ad quemquam fere nodum geniculati et ramosi, hinc sulcati et 
interdum longitudinaliter scabro-puberuli, ceeterum glabri. agin breves, hinc fissee. Folia 1}-2-pollicaria, 
pleraque complicata, subsessilia, basi rotundata. Pedunculi sub spatha semipollicares ad pollicares. Perigonii 
exterioris foliolum exterius 2 lin. longum, lateralia paullo breviora, latiora, inter se libera; interioris foliola 
2 orbiculata, brevissime unguiculata, tertium lato-ovatum, sessile, glanduloso-lincolatum. Stamina fertilia 
tria; anthere 2 ovato-sagittatew, loculis oblongis arcuatis subcontiguis, tertia longior incurva loculis contiguis 
parallelis lineari-oblongis. Stamina sterilia 2, antheris more Commelynarum cruciato-lobatis ; sextum omnino 
deest. Stylus filiformis, apice obtusus, tenuissime stigmatosus. Fructus 3 lin. diametro, trilocularis, peri- 
carpium membranaceum nitidum, in sicco nigro-plumbeum. Semina in quoque loculo 2, superposita, nigra, 
grosse rugosa, fructum fere implentia, sed tanquam ex sicco apparet pulpa tenui nidulantia. 
The fruit of this species is so different from that of any other Commelyna I 
am acquainted with, that I should have considered it as forming a distinct genus, 
were it not that the habit, inflorescence, and flowers are so precisely those of 
Commelyna, that its separation would break through the present very natural 
circumscription of that genus. 
68, Traprscantia cordifolia, Sw—Kunth, Enum. 4. p. 91.— Pedunculi terminales, gemini, 
filiformes, apice 5-7-flori; pedicelli pubescentes; filamenta imberbia, perigonio interiore breviora at 
non brevissima. Czetera cum descriptionibus auctorum omnino conveniunt.—Atacames. 
869. Trapescantia triandra, Kunth, Enum. 4. p. 93.—Panama. 
870. Trapescantia cumanensis, Kunth, Enum. 4.:p. 96.—Panama. 
This is the same plant as Cuming’s n. 1140, from the same locality. It 
agrees, In Some respects, rather with 7’. Schlechtendahlii than with 7’. cumanensis, 
but the outer perigon is not smooth. The stem, on the other hand, is smooth, 
with the exception of a longitudinal line of short hairs below each leaf-sheath. 
The flowers agree precisely with Kunth’s description of 7’. cumanensis. Possibly 
