GENTIANA 



GENTIANA 



1325 



HHH. Seeds strongly winjed. 



I. Fls. closed, purple 22. AndrewsU 



II. Fl^. open 23. linearis 



FF. Anthers free, at least finally. 



G. Number of corolla-lobes 10.24. pyrenaica 

 GO. Number of corolla-lohes 5 

 (rarely 4). 



H. Calyx 4-lobed 25. prostrata 



HH. Calyx 6-lobed. 



I. Lvs. distinctly rough above 



(hispid-scabrous) 26. scabra 



II. Lvs. distinctly rough at 



the margins (scabrous). 



J. Lobes of calyx shorter 



than the calyx-tube . . .27. Fortunei 



JJ. Lobes of calyx as long as 



the calyx-tube. 



K. Corolla-lobes ovate, 



acute, a little longer 



than the much - cut 



appendages 28. septemfida 



KK. Corolla-lobes oblong- 

 lanceolate, obtuse, 

 thriee as long as the 

 much-cut appen- 

 dages 29. affinis 



III. Lvs. not distinctly rough 

 above or at margins. 

 J. Seeds not at all winged. 

 K. Form of corolla-lobes 



linear-oblong .30. Olivieri 



KK. Form of corolla-lobes 

 ovate, often broadly 

 so. 

 L. Fls. solitary. 



M. Peduncled 31. Porphyrio 



MM. A^ot peduncled.. . .32. ornata 

 LL. Fls. in clusters of 3~ 

 6 or more. 

 M. Lvs. lanceolate- 

 linear 33. triflora 



MM. Lvs. ovate to ob- 

 long-lanceolate. 



N. Height 2-4 ft 34. sceptrum 



NN. Height 9-13 in. 

 o. Calyx-lobes ov- 

 ate, about as 

 long as the 

 calyx-tube. . . . 35. calycosa 

 OO. Calyx-lobes lin- 

 ear, moderate- 

 ly or jnuch 

 shorter than 

 the calyx-tube. ^6. Parryi 

 JJ. Seeds winged (at the 

 base in G. Kurroo, in 

 G. Bigelovii wings 

 narrow, thickish). 

 K. Height 2-8 in.: fls. 

 spotted. 

 L. Pedicel Y^in. long or 



more 37. Kurroo 



LL. Pedicel very short, 



practically absent. .SS. Newberryi 

 KK. Height 1-2 ft. 



L. Fls. in a dense sptfce.39. Bigelovii 

 LL. Fls. 1 to few or 

 several. 

 M. Appendages con- 

 spicuous, some- 

 times nearly as 

 long as the corolla- 

 lobes 40. oregana 



MM. Appendages only 

 half as long as 

 the corolla-lobes. .41. puberula 

 EE. Caps, sessile. 



F. Anthers grown together; style 

 distinct: seeds winged. 

 G. Calyx 5-cut, the lobes longer 



than the calyx-tube 42. pannonica 



GG, Calyx entire, truncate, indis- 

 tinctly 5-lobed 43. Gaudiniana 



FF. Anthers free; style usually 



not distinct: seeds not winged. 



a. Lvs. 6-12 in. long: calyx5-G- 



lobed 44. macrophylla 



GO. Lvs. much shorter: calyx 4- 



lobed 45. Cruciata 



DD. Stigmas contiguous, rather fun- 

 nel-shaped, the margin crenate- 

 fitnbriate. 

 E. Anthers free; style distinct. 



F. Calyx pellucid, veiny 46. carpatica 



FF. Calyx leafy. 



G. Seeds winged 47. imbricata 



GG. Seeds not winged. 



H. Lvs. ovate 48. verna 



HH. Lvs. obovate 49. bavarica 



HHH. Lvs. linear 50. pumila 



EE. Anthers connate; style short. 

 F. Fls. spotted. 



G. Color deep blue 51. acaulis 



GG. Color sky-blue 52. angustifolia 



GGG. Color violet-blue '. . .53. Kochiana 



FF. Fls. not spotted, 



G. Corolla broadly bell-shaped. 



H. Size of fls. large 54. Clusii 



HH. Size of fls. small 55. alpina 



GG. Corolla almost cylindrical. ..5f>. dinarica 



1. l&tea, Linn. Fls. in dense, umbel-like cymes; 

 corolla 5-6-parted; lobes oblong-linear, acuminate; 

 anthers free; style none. July-Sept. Eu., Asia Minor. 

 Gn. 64, p. 59. G.W. 3, p. 290.— Prop, only by seed. 

 Sow seed in Nov. in coldframe. Seedlings appear the 

 following March and April. In May and June prick 

 them out under a coldframe, and in Aug. transfer 

 young plants to pots, where they should be kept until 

 needed for permanent outdoor use. Be very careful 

 never to break the roots. Sometimes cult, abroad for 

 medicine. 



2. Biirseri, Lapeyr. A low perennial, less than 1 ft., 

 with a simple St.: lvs. elhptic-ovate, 7-nerved: corolla 

 mostly 6-cut; the tube much longer than the limb; lobes 

 ovate-oblong, acute; anthers connate; style distinct. 

 June, July. Pyrenees. — Cult. Uke preceding. 



3. decumbens, Linn. f. (G. adscendens, Pall.). A 

 stout, erect herb with fl.-sts. 2-10 in. tall: lvs. mostly 

 radical, oblong or eUiptic, margins scabrous: fls. blue; 

 calyx-tube }^in. long, often split nearly to the base; 

 corolla narrowly obconical, toothed between the lobes; 

 lobes 5, ovate; anthers connate, finally free. Hima- 

 layas, Tibet. Junf^Aug. B.M. 705, 723.— Cult, like 

 G. lutea. 



4. purpiirea, Linn. Lvs. ovate-oblong, 5-nerved: fls. 

 purple above; corolla-tube yellowish, club-shaped; 

 lobes mostly 6, obovate-subrotund, one-third the length 

 of the tube. Aug., Sept. Eu. L. B.C. 6:583 shows a 

 rich, dull purple, with no trace of blue. — Compost of 

 sphagnum and heath soil. Be careful not to break the 

 roots. 



5. riibra, Clairv. (G. r/MSmom, Gillaboz). One of 5 or 

 more natural hybrids between G. lutea and some species 

 of the section Coelanthe, which includes G. punctata, 

 G. purpurea, G. Pannonica, and G. Burseri: fls. purplish 

 outside. Swiss Alps. 



6. punctata, Linn. Lvs. 5-nerved: calyx 5-7-cut; 

 corolla-tube bell-shaped; lobes ovate, muticous, one- 

 third the length of the tube; anthers finally free. Cent. 

 Eu. — The spots are not arranged in any definite order. 

 This belongs to the section Coelanthe, in which the 

 seed has a wing of the same color, while the next 5 

 species belong to the section Pneumonanthe, in which 

 there is no wing, or it is of a different color. Cult, like 

 G. Froelichii. 



7. alba, Muhl. St. stout: lvs. acuminate, with a 

 clasping base: fls. in a terminal head, with single or 

 clustered ones in the upper axils; dull white, commonly 

 tinged yellowish or greenish; corolla resembling G. 

 Sapoiiaria, but more bell-shaped and open ; lobes ovate, 

 short, little if at all spreading. Low grounds and moun- 

 tain meadows, N. Amer. B.M. 1551 (as G. ochroleuca). 

 — This species now takes the name G. flavida, Gray. 



