84 SCHOMBURGK's GUIANA PLANTS. 
piniee. Where again in Swartzia, there is but one large 
petal, it is similar in form and situation to the single petal of 
many Amherstiee. The stamina of Martiusia, ind of Zoller- 
nia, are not unlike those of Cassiée, and in their insertion 
they are scarcely more hypogynous than in that tribe, whilst 
in Cordyla and Allania, they are decidedly perigynous; their 
number in Swartzia, Cordyla, and Allania, is much beyond 
that of any other Cesalpiniee, out when once the number 
ten is exceeded, (as in several Amherstiee,) no reliance can 
be placed on this character. The dehiscence of the calyx is 
remarkable; but the connexion in this respect through 
Martiusiaand Zollernia, with Poinciana among Eucesalpiniet, — 
and with many Bauhiniee and Cynometriee, is very gradual. — 
216. Martiusia excelsa, Gen. Nov.—On the Essequibo, - 
Rupunoony, and Quitaro. Schomburgk, n. 49 and 589. — 
‘Martivusia. Char. Gen. Calyx valvatim 5-partitus, 
laciniis per anthesin reflexis deciduis. Petala 5, sestivatione 
irregulariter imbricata, oblonga, supremo latiore sæpiuūs - 
interiore. Stamina pauca (4) subhypogyna, filamentis bre- 
vissimis, antheris crassis oblongis, longe acuminatis, apice 
biporosis. Ovarium sessile glabrum pauciovulatum, stylo 
longo incurvo, stigmate minuto terminali. Legumen..- 
` Species unica M. excelsa. - Arbor 50-pedalis. Rami glabri. - 
Folia alterna, glabra, impari-pinnata. Stipule crassiuscule - 
lineari-subulate, decidue. Foliola 5, alterna, ovali-elliptica 
obtusa v. breviter acuminata, basi subcordata, 3-5-pollicarias 
coriacea, penninervia, supra nitida, subtus opaca. Panicula 
terminalis ramosissima, floribunda. Bracteæ et bracteolz in 
speciminibus nulle, forte delapse. Alabastra 10 lin. longas 
obliqua, basi supra gibba, longe acuminata, Calyx Crassus, 
extus uti pedicelli et rachis racemorum velutino-tomentosus 
rufescens, per anthesin a basi ad apicem in valvas 5 rumpens. 
Petala crocea glabra, pollicaria, subzequilatera, patentia, bast 
in unguem brevem angustata. Antherz inzequales 6-8 lin. 
longe sepissime 4, interdum vero 3 tantum. Ovarium v 
in stylum gradatim attenuatum. 
_ Thegenus Martiusia, or Martia of Leandro di Sacramentos 
