MEXICO. 
295 
Ord. XLVI. RUBIACE^. Juss. 
LEPTOPETALUM. Nov. Gen. 
Cahjcis tubus quadridentatus. CoroZ^rt'quadripartita, laciniis elongatis lineari-spathulatis angustissimis patulis 
utrinque glabris. Stamina i ; filaraentafiliformia corollam aequantia : antherae oblongse oscillatoriaj. Ovarium 
biloculare, multiovulatum. Stylus filiformis, apice crassior et subemarginatus. Capsula hemisphaerica, com- 
pressiuscula dentibus calycinis coronata bilocularis, vertice loculicida, rima dehiscens. Semina plurima in 
quoque loculo, (immatura) minuta aiigulata. — Frutex glaher. Rami angulati. Folia opposita, sessilia, 
ovalia, acutiuscula, basi subcordata. Stipulae late triangulares, breves acutce, interpatiolares ; Corymbi 
terminales, trichotomi. 
1. Leptopetalum Mexicanum. (Tab, LXI.) 
Tab. LXI. Fig. 1. Flower ; Jig. 2. Corolla and stamens ; Jig. 3. Pistil ; Jig. 4. Fruit ; Jg. 5. The same 
cut through transversely : — magnified. 
1. Hamelia Jacq. 
1. Chiococca racemosa, Jacq. 
1. Farameum ? (Tetramerium) — ; foliis breviter petiolatis oblongo-lanceolatis 
acutis stipulis caducis ramulorum Jatis brevibus exaristatis, cyma terminali trichotoma, 
bacca globosa calycis dentibus brevibus coronata. 
Hab. Acapulco. Apparently near F. jasminoides or sessilifolia. Leaves tw'O to four inches long. 
1. Cephalanthus occtd'ewto/w. Linn. 
1. Bigelovia distans — Borreria distans. Ch. ^ Schl. — Spermacoce distans. H. B. K. 
2. B ? 
Caules adscendentes pubescentes. Folia ovata acuminata basi in petiolum attenuata, utrinque pubescentia. 
Stipularum setae 2-3, tubo paullo longiores. Capitulum (in frustulo unico suppetente) solitarium terminate, 
3-4 lineas in diametro, foliis quatuor parvulis bracteatum. Calyx pilis albis erectis vestitus : tubus obconicus : 
limbi dentes 4, inaequales, corolla infundibuliformis, tubo brevi tenui. 
We cannot refer this satisfactorily to any described species, although most probably it may be among those 
enumerated by De Candolle ; it may be Borreria Bartlingiana, but approaches much also to B. Wydleriana. 
1. Spermacoce tenuior. Linn . — Hab. Tepic and Talisco. 
1. Diodia barbigera ; prostrata glabra, foliis oblongis acutis basi in petiolum attenu- 
atis, stipularum setis 4-5 tubum basi barbatum aequantibus, floribus aggregatis verticilla- 
tis, calycis dentibus 4 obtusis, corolla (minuta) ore albo-barbata. — Hab. Talisco. 
1. Mitracarpum Schizangium. De Cand. Prod. 4. />. 572. 
1. Galium Aparine. Linn. — G. Mexicanum. H. B. K. 
There are three other Rubiacece in this collection, but they are already noticed among those from Loo 
Choo and Bonin, whence they were, in all probability, brought. 
