ICOSA.NDRIA. PENTAGY.NIA. SOf 



?.Iiddle sized trees with alternate undivided leaves; 

 fiowers mostly corymbose and terminal, rarely solitarv 

 and lateral, white or red in the apples; fruit turbinate, oii- 

 iy umbilicate at the summit, saccharine and partly deli- 

 quescent in the Pear; fruit in the Apple globose uvnbili- 

 cate at each extremity, subacid, and at length more fari- 

 liaceous. 



Species 1. P. coronarla. Ripe fruit yellowish and 

 subdiaphanous, always mildly acid. 2. an^ustifolia. 



A genus nearly divided betwixt Siberia and Kurope, 

 there is also one species in Persi:i, and a very splendid 

 and hardy species in China with crimson flowers. 



S42. SPIR^A. L, 



Calix spreading 5-cleft, inferior. Petals 5, 

 equal, roundish. Stamina numerous exserted. 

 Capsules 3 to 12, internally bivalve, each 1 to 

 3-seeded. 



Shrubby or herbaceous; leaves alternate, simple, or pin- 

 nately divided, stipules adnate to the petiole, sometimes 

 minute or none; flowers mostly corymbose or paniculate. 



Species. l.S. saUcifolla. Q.tomentosa. Vy.hiipe^cifolia. 

 4. chamcedrifoUa. 5. betuUfoUa. 6. opulifolia. " 7. capita- 

 ta. Ph. 8. discolor. Ph. 9. sorbifoUu. 10. Arunciis. 

 11. lobata. 



A f^enus almost equally divided betwixt Siberia and 

 North America. 



343. GILLENIA. Moenclh Spir^^a. L, rindiau 

 Physic.) 



Caiia- subcampanulafe, border 5-toothed. Co- 

 roUa partly unequal. Petals 5, lanceolate, atte- 

 nuated, c>)arctate at the claws. Stamina few- 

 er, included. Styles 5, contiguous; stigmas 

 capitate. Capsule 5-cel!ed; cells 2-seeded. 



Herbaceous plants with alternate ternately divided or 

 pseudopinnate leaves furnished with stipules; flowers 

 few, terminal, dispersed, subpaniculate; petals elongated 

 partly irregular; (roots catliartic and emetic.) 



Species. 1. G. trifoliata. 2. stipulacca. Radical 

 leaves piimatifid. A species confined to the west side of 

 the Alleghany mountains, extending as far north as the 

 state of New York, according to the observations of Dr. 

 I. Cleaver. For a figure, see Dr. W. Barton's Aledical 

 Botany, p. 71. tab. 6/ 

 Hitherto a North American genus. 



