5$ CLASS XII. ORDERS V and XIII. 



Ordeb. V. Pentagynia. 



Pyrus. Calyx 5-cleft, superior : corol 5-petall- 

 ed : pome 5-celled, many-seeded. 36.92 — commu' 

 jiisy (pear) leaves ovate, liowers corymbed. la . w. e. 

 -^-maiusy (apple) leaves ovate, flowers in sessile um- 

 bels. ^2 . r-w. e.'^cydoniaj (quince) leaves entire, 

 flowers solitary. I2 . w. e.-~~coro?iariay (crab-tree) 

 leaves cordate, angular, flowers corymbed. >2 • i*"W. 



Spiraea. Calyx 5-cleft, inferior, spreading : 

 corol 5-petalled : capsule 2-valved within, many- 

 seeded. 36. 92 — albof (steeple bush, or hand-hack) 

 leaves wedge-lanceolate, serrate, glabrous, pani- 

 cled. \ . vf.—^iomentosay leaves lanceolate, downy, 

 racemes compound. >2 . p — trifoliata, (Bowman's 

 root, or Indian physic) leaves ternate, flowers sub« 

 panicled. 2/. w. 



Mesembryanthemum. Calyx superior, 5-cleft : 

 petals numerous, linear, cohering at the base : cap- 

 sule fleshy, many-seeded, turbinate. 13. 87 — crys* 

 iallinuniy (ice-plant) very bi*anching, leaves ovats 

 with ice-like papillae, w. e. 



Order XIII. Polygynia. 



Rosa. Calyx urn-form, 5-cleft, fleshy, contract- 

 ed towards the top : petals 5 : seeds numerous, 

 bristly, fixed to the sides of the calyx within. 35. 92. 

 ^^^carolinianay (swamp-rose) germ globular his- 

 pid, peduncles somewhat corymbed and hispid, 

 stem with stipular prickles. ^ . r. — rubiginosay 

 (sweet-brier) germs ovate, peduncle and germ his- 

 pid, petioles and stems with recurved prickles, ^i . 

 r. — luciday (wild rose) germ globular-depressed, 

 somewhat bristly, leaves oblong-oval, glabrous, 

 flowers mostly in pairs, ^i . r — jiar-vijioray germ 

 globular-depressed, bristly, prickles on the stipule 

 strait, leaves oval, flowers in pairs. \ . r. 



RuBUB. Calyx 5-cleft, corol 5-petalled : pistils 



