12 
Fifth class. 
yellow, seldom white. Filaments of the stas bearded 
Verbascum. 416. 
— Anthers 2-celled ( Solanacece) . 51 
51. Fr. a capsule ....... 52 
— Fr. a berry ........ 51 
52. FIs solitary, 1.-axillary. Caps, spiny (like tkeHorse-chestnut) 
Datura. 414. 
— FIs in a spike, raceme or panicle . . . 53 
58. Caps, with circumscissile dehiscence. FIs almost sessile 
Hyoscyamus. 413. 
— Caps, dehiscing longitudinally by 2 valves. FIs pedicelled 
Nicotiana. 415. 
54 (51). Anthers divergent . ... Atropa. 412. 
•— Anthers connivent, at any rate after shedding pollen 55 
55. Anthers dehiscing by 2 terminal pores. FIs in corymb¬ 
like cymes or panicles . . . Solanum. 409. 
— Anthers dehiscing by longitudinal slits. FIs solitary 50 
56. Cal. with 5 prominent angles and 5 sagittate lobes 
Nicandra. 410. 
— Cal. much enlarged after flowering, inflated, with 5 teeth 
Physalis. 411. 
57 (2). Perianth superior, infundibuliform, green outside, 
white inside. Ls narrow, entire . . Thesium. 497. 
— Perianth or cal. inferior . . . . . 58 
58. 5 barren filaments between the 5 stas. (Ls with scarious 
stipules) ......... 5i) 
— without the barren filaments .... 00 
59. Lobes of the cal. laterally compressed, keeled at the 
back, terminated by a subulate point, white 
lllecebrum. 202. 
— Cal.-lobes flat-concave, green . . Herniaria. 201. 
60. Stig. capitate. Ls or petioles with sheathing stipules 
Polygonum, 493. 
— Stig. filiform. Ls exstipulate . . Chenopodium. 487. 
61 (1). Floral envelope composed of cal. and cor. . 02 
— FI. envelope simple (a calyx) .... 127 
62. Pets 5, superior (UmbeUiferce) .... 03 
— Cor. gamopetalous, inferior ..... 123 
63. Umbel simple, or several umbels contracted into the 
form of a capitulum so as to form an irreg. branched 
umbel (or cyme) ....... 01 
— . Umbel reg\, compound (umbel and umbellules) . 07 
64. Thistle-like pis with spiny-dentate ls Eryngium. 215. 
— Pis not like thistles ...... 05 
65. Ls orbicular-peltate, crenate . Hydrocotyle. 212. 
— Ls palmati-lobed or -partite, not orbicular-peltate, OO 
66. Fr. covered with numerous hooked prickles. Involucel 
very small.Sanicula. 213. 
