IC0S.4NDRIA. PENTAGYNIA. SOf 



Middle sized trees with alternate undivided leaves; 

 flowers mostly corymbose and terminal, rarely solitary 

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

 ly umbilicate at the summit, saccharine and partly deli- 

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

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

 naceous. 



Species 1. P. coronaria. Ripe fruit yellowish and 

 subdiaphanous, always mildly acid. 2. angustifolLa. 



A genus nearly divided betwixt Siberia and Europe, 

 there is also one species in Persia, and a very splendid 

 and haixly species in China with crimson flowers. 



342. SPIR^A. h, 



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, orpin- 

 nately divided, stipules adnate to the petiole, sometimes 

 minute or none; flowers mostly corymbose or paniculate. 



Species. l.S. salicifoHa. 2. tomeiitosa. 3. hi/pericifuUa, 

 4. chamxdrifolia. 3. betulifoUa. 6, opuUfolia. 7. capita- 

 ta. Ph. 8, discolor. Ph. 9. sorbifoUa. 10. Ariincui. 

 11. lobata. 



A g-enus almost equally divided betwixt Siberia and 

 North America. . 



343. GILLENIA. Moench, Spiraea. Z. (Indian 

 Physic.) 



Ca/ia* subcampanulate, border 5-toothed. Co- 

 rolla partly unequal. Petals 5, lanceolate, atte- 

 nuated, coarctate at the claws. Stamina few- 

 er, included. Styles 5, contiguous; stigmas 

 capitate. Capsule 5-celled; 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 cathartic and emetic.) 



Species. 1. G. trifoliata. 2. stipnlacea. Radical 

 leaves pinnatifid. 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 Medical 

 Botany, p. 71. tab. 6. 

 Hitherto a North American genus. 



