﻿Schomhurgkiance. N. O. Apocynea?. 



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TAB. LXIV. 



4 



Antonia pilosa. 



Gen. Char. Antonia,* Pohl. Cal pentaphjilus, squamis 

 imbricatis tectus. Corolla infundibuliformis, laclniis 5, revo- 

 lutis, fauce barbata. Stamina exserta, basi barbata. Stigma 

 bifidum. Ovariimi biloculare, placentis peltatis, ovulis numero- 

 sis tectum. Fructus capsularis, oblongus, bilocularis, bivalvis ; 

 dissepimento e valvarum margluibiis introflexis. Loculi mo- 

 nospermi (ovub's numerosissimis abortientibus). Semen plano- 

 compressum, pekatum ad utramque extremitateni alatum. 

 Albumen carnosum. Embryo longltiidine fere albuminis, erectus, 



umbilico paralleUis. Cotylcdones rotundatEe, compressse. Ra- 

 dicula teres. 



Antonia /J^7o5a; raniis foliisque obovatis subtus sericeo-pilosls. 

 Hab. Essequibo River. Dr. Schomburgk {n. 85, a.). 



Antonia ovata, Pohl, the type of this Genus, has the leaves 

 ovate, three or four times the size of those of the present plant, 

 and the underside, as well as the branches, quite glabrous. In 

 other respects the two plants almost entirely agree, and bear a 

 striking resemblance at first sight to some genera of Cu;w/>o.5/te, 

 especially Eupatorium. The fruit was unknown to Pohl ; but 

 the superior ovary and the absence of stipules will separate the 

 Genus from Rubiacece, to which that author referred it. Its 

 symmetrical flowers will keep it, I think, distinct from Logania- 

 cetF, to which Mr. Bentham has suggested it might belong : 

 and 1 am induced to refer it to ApocynecCy notwithstanding 

 that the embryo is transverse with the umbilicus. 



Fig. 1. Flower. / 2. Calyx and pistil. / 3 Pistil. / 4. 

 Section of the ovary. / 5. Under side of the peltate placenta. 

 f- G. Fruit. /. 7. Section of a valve, shov.-ing the position of the 

 seed. f. 8. Under side of the seed with the placenta, f. 9. 

 Placenta of the seed, the abortive ovules seen below. /. 10. Seed 

 cut through to show the embryo;— more or less magnijied. 



* In ilcnorainatione liujus generis fulgct gloria celsissimi Pnncipis et Archi- 

 ducis Austriujj Antonii Victoris, Magni Magistri Ordinis Teutonic), sumini 



Cotaniccs cultoris et promotoris, &c., &c., &c Pohl, PL Bias. Ic. et Descr. 



»■ 2. p. 1 i. 



