GENTIANACE. 79 
2, ERYTHRZGA, Renealm. 
Corolla-lobes 14 to 24 lines long; tube much longer: anthers oblong...........-. 1, 2,8 
Corolla-lobes 3} to 6 lines long: tube a little longer; anthers linear..... atapaie gave 4,5 
1, E, floribunda, Benth. Pedicels short or none: corolla-lobes 2 lines long or less, 
2, E. Muhlenbergii, Griseb. Pedicels short or 2-bracted; corolla-lobes obtuse, 
3, E. Douglasii, Gr. Pedicels slender: corolla-lobes obtuse: seeds globular, 
4. E. trichantha, Griseb. Fiowers often corymbose, some sessile, lobes acute, 
5. ‘EH. venusta,Gr. Flowers pediceled: corolla-lobes obtuse, tute yellowish, 
38. GENTIANA, Tournefort. 
a. Corolla without plaited folds or appendages between the lobes, 
Flowers solitary on terminal peduncle, 12 to 18 lines long............ eemictiare eetwats 1,2 
Flowers several, smaller, 5 to 7 lines long: calyx 5-cleft......... 2.02.2 ccc ee ee ccueee 
6. Corolla with folds between the (usually 5) lobes which are prolonged into thin teeth or 
accessory lobes; stigmas distinct: pod on a stipe. 
Annual: anthers introrse: stem leaves ovate-cordate 2 to 4 lines long.............006 4 
Perennial: anthers more or less extrorse: usually a pair of bracts or leaves under the short- 
peduncled or sessile flower. 
Stems several from one caudex, 1-2-flowered: stem-leaves connate-sheathing. 
Stems 1-flowered, 2 to 4 inches high: radical leaves rosulate.............. 5 
Stems longer: upper pair of leaves enclosing the flower................ 6,7 
Stems many-leaved: style manifest, corolla blue or bluish. 
Corolla-lobes broad, narrowed at base; accessory lobes entire........... 8,9 
Corolla-lobes not narrowed at base: accessory lobes laciniate,........ 10, 11 
serrata, Gunner, var. holopetala, Gr, Calyx angular, lobes keeled. 
simplex, Gr. Leaves linear-oblong, 3 to 9 lines long: calyx hardly angalar. 
Amarella, L. var. acuta, Engelm. Stem acute-angled: capsule sessile. 
Douglasiana, Bong. Cymosely branched: radical leaves rosulate, 
Newberryi, Gr. Radical leaves obovate to spatulate: corrolla 18 lines long, 
setigera, Gr. Stems decumbent: 1 or 3 bristles between corolla-lobes. 
calycosa, Griseb. Stems erect: accessory corolla-tubes laciniate or 2-cleft. 
Menziesii, Griseb, Stems slender, a ft. long or less: leaves 14 in. long or lese 
sceptrum, Griseb. Stem 2 to 4 ft. high: leaves broader, 14 to 3 in. long. 
G. Oregana, Engelm. Corolla over an inch long, lobes roundish. 
G. affinis, Griseb, Corolla an inch long or less, lobes ovate, acute, 
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4. FRASERA. Walter. 
Stout, 2 to 5 ft. high: leaves not white margined............... sre vainis die Sra rerejolaln’atG- iy 1 
Gray-green, 1 to 3 ft. high: leaves with cartilaginous white margins............ 3, 4, 6 
1. F. thyrsiflora, Hook. Leaves in 2’s or 3’s: a gland on each corolla-lobe. 
