162 PENTANDRIA. DIGYXIA. 



Species. 1. A. androscemifui'aim. 2- cannabimim. S, 

 hypericifolmjn. 'I hese 3 species are very nearly allied to 

 each other, and mijjht almost be taken for so many varie- 

 ties. They have all l.kewise the property of mechanically 

 entan.^ling- fiies by the proboscis which is retained in the 

 acute fissui-e of the aniheis. 'Ihey afford by incision a 

 lactescent fluid, which when sufficiently dried exhibits all 

 the properties of Gum Elastic or Kaoutchouk, supposed at 

 one time to have been the exclusive property of the Urce- 

 ola elustica, but common, probably, to most of the lactes- 

 rent A PociNEJE, and perhaps many more of the Etiphor- 

 BiACE./K than the Sipho7iiu elastica, of Brazil and Guiana. 



Of this genus there are several otlier species in South 

 America, India, and the Cape of (iood Hope, and 1 species, 

 A. venetiimy said to be indigenous to the islands of the 

 Adriatic. 



239. PERIPLOCA. X. 



Calix minute, S-cleft, persistent. Corolla ro- 

 tate, flat, 5-parte(J, orifice surrounded with an 

 iirceolate 5-cleft crown, terminatini; in 5 fili- 

 form appendices or awns. Style 1; stigma capi- 

 tate with 5 angles. Follicles 2, ventricose. Seed 

 comose. 



Shrubs, many of them climbing; leaves opposite; flow- 

 ers subcorymbose, axillary ov terminal. 



Species. 1. P. gr^eca. Naturalized or indigenous in 

 the western part of the state of New York. Flowers 

 brownish, sometimes 7-cleft, segments of the corolla each 

 marked with a villous oblong central spot; stigma with 

 10 crenatures. 



TliC rest of this genus belongs to India and Africa. 

 The P. grxca exists in Syria and Siberia, as well as in 

 Korth America. 



240. GONOLOBUS. Michaux, 



Corolla rotate, 5-parted. Lepantliium] (op 

 nectary) simple, rylindrir, subchrnose, 5-lobed, 



■J- Literally, in the plural, Jlo^ver-sca/es, (from Af 5r/$, a scale, 

 and «v^«5, ft flower,) intended to designate generally, the inte- 

 rior corolla or petaloid nectarium of Linnsrtis. In this place it is 

 the sarre as the corona stamineay '• stamineous crown," of R. 

 Brown; but used only by him to point out the very singular 

 iepanthiujn which exists in the order Asclepiadeje. 



