ICOSANDKIA MONOGYxVIA. PrunUS. 333 



17, P. pedunculis solitariis, foliis ellipticis glabris, fructibus cerasifera, 



pendulis, raniis subinermibus, IFilld. sp. pi. 2. p. 997. 

 Near habitations, frequent. V, , April, May. v. v. This 

 is the common Myralolan Cherry, and had its origin 

 from America, according to authors, 



18. P. pedunculis solitariis, foliis elllptico-lanceolatis subtus spinosa. 



pubescentibus, fructibus rectis, ramis spinosis. Willd. 

 sp. pi. 2. p. ggy. 

 The common Black Thorn, or Sloe, is frequently found 

 in hedge-rows, particularly in Pensylvania, but has 

 teen introduced from Europe. 



40i. TIGAREA. ^uM. guj. 2. p. 917. Pursh in linn, 

 trans, f. 11. 



1 .r. foliis in apice ramulorum confertis, obcuneatis, 3-den- tridental^, 

 tatis, supra villosis subtus cano-tomentosis, floribus 

 terminalibus solitariis brevissirae pedunculatis. 

 In the prairies of the Rocky- mountains and on the Co- 

 lumbia river. T2 . July. v. s. in Herb. Leivis. flow- 

 ers yellow. 



Frutex ramosissimus. Cortex cinerea. Ramuli brevis- 

 simi, gibbosi, apice fasciculatim foliosi. Gemmce • 

 squamis subrotundis, glabris, fuscis. Folia cuneifor- 

 mia quasi in petiolum angustata, apice 3-dentata sen 

 3-fida, laciniis lateralibus acutis, intermedia subemar- 

 gmata, margine rev^oluta, supra strigoso-villosa, subtus 

 cano-tomentosa, subtriplinervia, semiuncialia. Pe- 

 dimculi hreussmv, terminales, soHtarii, uniflorl. F/ores 

 lutei, magnitudine Cratcegi oxyacanthi. Calyx extus 

 hirsutissimus, laciniis acutis. Petala obovata, subun- 

 guiculata, calyce paulo longiora. Fdameyita circiter 

 20. longitudine petalorum. Antherce oblongse, bilo- 

 culares. Germen oblongum, hirsutura, longitudine 

 stammum. Stylus brevis, obliquus. Stigma simplex. 

 Lapsula immatura calyce persistente cincta. 



This singular shrub approaches the nearest to Tigarea of 

 Aublet : the seeming difference in character may only 

 be owing to the imperfect state of the specimens 

 Aublet's description seems to b^; made of. It cer- 

 tainly deserves to be separated from Tetracera, though 

 generally united with that genus. 



