SK 
oT. 
38. 
39. 
48. 
49. 
TABLE OF GENERA. 
_ Perasires. Flower-heads in a dense oval spike ; outer florets not ray-like. 
_ Senzcro. Involucrum scales linear, 
with smaller ones at the base, brown at 
the points. Outer florets ray-like (sometimes very slightly). Pappus simple, 
hair-like, 
Asrer. Involucrum imbricated, scales linear. Outer florets ray-like, nume- 
rous, blue or purplish. 
Sonrpaco. Involucrum closely imbricated. Florets of margin few, ray-like, 
yellow. 
Invua. Involucrum imbricated ; scales leaf-like, spreading. Flower-heads 
large, terminal ; outer florets ray-like. Pappus simple. 
- Pyricarta. Involucrum hemispherical, closely imbricated, with narrow scales. 
Pappus double. Outer florets more or less ray-like. 
_Tanparpa. Involucrum imbricated, with linear scales. Pappus simple. An- 
thers with bristles at the base. Leaves succulent. 
. CrxerartaA. Involucrum simple; scales many, equal, upright. Pappus simple, 
hair-like. Outer florets ray-like. 
- Doronicum. Involucrum double, the scales longer than the disk. Pappus of 
the outer florets wanting. Outer florets ray-like. Heads very large. 
. Betis. Inyolucrum hemispherical, simple. Receptacle conical. Pappus 
wanting. Outer florets ray-like, white or pinkish. Leaves entire. 
_ Curysantnuemum. Involucrum hemispherical, imbricated ; scales membranous 
on the margin. Pappus wanting. Outer florets white or yellow, ray-like. 
Leaves pinnatifid or jagged. 
_ Pyrerurum. Fruit crowned with a membranous border. Otherwise as 
Chrysanthemum. 
. Marricarta. Inyolucrum hemispherical, imbricated; scales obtuse, with a 
membranous border. Pappus wanting. Outer florets ray-lke, white. Re- 
eeptacle naked, nearly cylindrical. 
Antuemis. Inyolucrum hemispherical, imbricated; scales membranous at the 
border. Outer florets ray-like. Receptacle chaffy. 
Acnintza. Inyolucrum ovate, imbricated. Receptacle narrow, plain, chaffy. 
Pappus wanting. Outer florets few, ray-like. Heads in corymbs. 
*¥** Outer florets with neither stamens nor pistils; the rest with both. Florets all 
50. 
5k. 
oo hk = 
—_— 
tubular. 
CrenraurgEA. Outer florets funnel-shaped, much longer than the rest. 
*ex* Heads monecious. 
Xantuium. Fertile involucrum prickly, 2-flowered. 
Order XLVI. CAMPANULACEAK. 
. Campanuta. Corolla bell-shaped, 
. Puyreuma. Corolla rotate. Anthers distinct. 
. Jasiong. Corolla rotate. Amnthers adhering at the base. 
Order XLVIT. LOBELIACE A, 
. Losenra. The only British genus. 
Order XLVITI. VACCINIACEAS. 
. Vaccinium. Segments of corolla short, nearly erect. 
. Oxycoccus, Segments of corolla long, reflexed. 
Order XLIX. ERICACEA. 
. Errca. Fruit dry. Calyx simple. Corolla persistent. 
. Cauuna, Fruit dry. Calyx double. Corolla persistent. 

