Gentiana. | GENTIANES. 447 
D. Perennial, rarely annual, erect. Radical leaves usually rosulate, crowded ; 
cauline few, in distant pairs, sessile. Flowers large, ?in. diam. or more, 
in terminal cymes or umbels, rarely solitary. 
Annual. Flowering stems 6-12in., sometimes with de- 
* cumbent branches from the base. Radical leaves 
1fin., ovate or broadly oblong,membranous. F'lowers 
rather small, in involucrate umbels .. : 4. G. chathamica. 
Usually perennial. Flowering stems single or more rarely 
branched from the base, stout, erect, 6-20 in. Leaves 
yellow-green when dry; radical 1-4 in., linear- or oblong- 
spathulate; cauline 1-2 distant pairs, pneore GRP es 
Calyx short os 5. G. corymbifera. 
Perennial. Flowering stems usually cingle, very slender, 
6-20in. Leaves black when dry; radical 4-1 in., ovate- 
lanceolate ; cauline 2-5 remote pairs .. Si .. 6. G. Townsoni. 
Flowering stems usually single, often tall and stout, 
10-24in. Radical leaves #-14}in., obovate -spathulate ; 
cauline broadly ovate, often cordate at the base .. 7. G. montana. 
Flowering stems one or several, often decumbent below, 
5-20in. Radical leaves 1-3 in., oblong - spathulate, 
cauline 1-5 opposite pairs. Flowers in lax corymbose 
cymes orumbels .. 56 ae ne .. 8. G. patula. 
Flowering stems several, short. 1-6in. Radical leaves 
4-l4in., spathulate or linear-spathulate. Flowers in 
2-6-flowered cymes or solitary 9. G. bellidifolia. 
Flowering stems excessively branched from the base, often 
forming rounded masses 2-6in. diam. Radical leaves 
1-3 in., oblong- or obovate-spathulate. Flowers in dense 
corymbose cvmes .. oe He oe .. 10. G. divisa. 
EB. Annual, erect. Radical leaves numerous, rosulate, obovate-spathulate ; 
cauline few, petiolate. Flowers in 2-5-flowered wmvolucrate umbels. 
Flowering stems several, 4-10in. Flowers small, 4-4 in. 
diam. Calyx equalling the corolla or nearly so .. 11. G. Spencerv. 
FF. Prostrate or decumbent or swberect, leafy. Leaves spathulate; cauline nu- 
merous, petiolate. Hlowers in few-flowered cymes or clustered at the ends 
of the branches. 
Perennial, prostrate at the base. Leaves ?~12 in., linear- 
spathulate, long-petioled. Calyx much shorter than the 
corolla; lobes recurved at the tip .. Ms .. 12. G. saxosa. 
Perennial, prostrate at the base, 4-14in. Leaves 4-13 in., 
obovate - spathulate, fleshy, shining. eae almost 
equalling the corolla; lobes not recurved é .. 13. G. cerina. 
Annual, ascending or erect, 1-4in. Leaves 4-1in., linear- 
oblong. Calyx almost equalling the corolla .. .. 14. G. concinna. 
G. Stout, erect, 3-10 in. high, fastigiately branched, densely leafy. Flowers 
small, 4in. long, almost hidden by the cauline leaves and bracts. 
Annual. Radical leaves 1-2 in., oblong or oblong-spathu- 
late os ae Se ey i .. 15. G. antarctica. 
Perennial. Radical leaves ?-1}in., lingulate or linear- 
spathulate 50 ah Ay id .. 16. G. antipoda. 
