DICOTYLEDONS. - ROSACES. Spiraa. 265 



a. major, leaves almost smooth. 



/3. mi?ior, much smaller, leaves very pubescent, p. 56. Pastures. 



2. A. alpina, leaves digitate serrated at the extremity white and 

 satiny beneath, p. 56. Mountains. 



3. A. arvensis, leaves trifid pubescent, lobes deeply cut, flowers 

 sessile axillary, p. 56. Gravelly soils. 



2. DRYAS. 

 Cal. 8 10-cleft; segments equal. Petals 5 8. Pericarps 



with long feathery awns. 

 1. Dr. octopetala, petals 8, leaves simple serrated, p. 165. 



Mountains. 



3. POTERIUM. 

 Moncecious. Barren fl. Cal. of 4 leaves. Cor. 4-partite. 



Stam. 3040. Fertile fl. Cal. of 4 leaves. Cor. 4-partite. 



Pericarps 2. 

 1, P. Sanguisorla, thorns none, stem somewhat angular, stamens 



much longer than the cal. p. 273. Pastures. 



4. SANGUISORBA. 

 Cal. 4-lobed, coloured, bracteate at the base. Pericarps 2, sur- 



rounded by the persistent base only of the cal. 

 1. S. officinalis, glabrous, spikes ovate, stamens about as long as 



the perianth, p. 54. Moist meadows. 



SECT. V. AMYGDALE^E. Drufre superior, solitary, naked. Seed 

 suspended. Stamens indefinite. 



l.PRUNUS. 

 Nut of the drupe nearly smooth. 



1. Pr. PaduSy flowers in pendulous racemes, leaves obovate de- 

 ciduous glabrous with two glands at the summit of the foot- 

 stalk. p. 150. Woods. 



2. Pr. Cerasus, flowers in nearly sessile umbels, leaves ovato-lan- 

 ceolate subpubescent beneath, p. 150. Woods and hedges. 



3. Pr. domestica. peduncles solitary or two together, leaves ovato- 

 lanceolate subpubescent beneath, branches without spines. 

 p. 150. Woods and hedges* 



4. Pr. insilitia, peduncles in pairs, leaves ovato- lanceolate pube- 

 scent beneath, branches ending in a spine, p. 150. Hedges. 



5. Pr. spinosa, peduncles (mostly) solitary, leaves elliptico-lanceo- 

 late, subpubescent beneath, branches very spinose. p. 151. 

 Hedges. 



SECT. VI. SpiiLExE. Follicles superior, few-seeded. Stamen* 

 indejinite. 



1 . SPIR^A. 

 Cal. 5-cleft. Pericarps 312. 



