Tas. 8609. 
GENTIANA BarpatTa, forma GRANDIFLORA. 
Siberia. 
GENTIANACEAE. Tribe SwWERTIEAE. 
Gentiana, Linn.; Benth. et Hook. f. Gen. Plant. vol. ii. p. 815. 
Gentiana barbata, Froelich, forma grandiflora, Freyn in Oestr. Bot. 
Zettschr. vol. xlv. p. 468; a planta typica floribus majoribus 6-8 cm. 
longis differt. 
Herba annua, suberecta vel adscendens, caulibus simplicibus vel plus minusve 
ramosis teretibus bisulcatis glabris. Folia lineari-lanceolata, acuta vel 
acuminata, usque ad 6 cm. longa et 9 mm. lata, costa pagina superiore 
impressa inferiore prominente, nervis lateralibus pagina utraque obscuris, 
glabra, sessilia. Flores solitarii, pedunculo usque ad 1 dm. longo subterete 
glabro suffulti. Calyx viridis, glaber, 5-6 cm. longus, segmentis 4 inter 
se inaequalibus, duobus exterioribus lineari-lanceolatis longe acuminatis 
4°2 cm. longis 8 mm. latis, duobus interioribus ovato-lanceolatis acumi- 
natis 83cm. longis1 cm. latis. Corolla 6-8 cm. longa, glabra; tubus viridis, 
superne leviter ampliatus, basi 4 mm., apice 1°2 cm. diametro, basin 
versus glandibus 5 sessilibus staminibus alternatis instructus; segmenta 4, 
patentia, obovato-triangularia, apice subacuta, basi angustata, infra 
medium fimbriata, ima basi integra, 3°8 cm. longa, 2°5 cm. lata, extra 
viridia, intus coerulea. Stamina 4, filamentis 1°5 cm. longis medio 
2°75 mm. latis glabris decurrentibus, antheris 8 mm. longis. Ovariwm 
fusiforme, 4 mm. altum, medio 4 mm. diametro, glabrum.—W. B, Tunrin. 
The fine Gentian here figured belongs to a group of 
forms for which it is hard to find limiting characters, 
and there is a fairly complete series of forms transitional 
between small northern examples of Gentiana detonsa, 
Rottb., a species to which our plant is closely allied and 
within which it is at times included, and the form with 
large and beautiful flowers represented in our illustration. 
The plant originally described as G. detonsa from speci- 
mens obtained in Norway and perhaps also in Iceland 
is characterised by its quadrifid corolla with crenulate 
lobes neither barbate nor fimbriate on the margin below 
the middle, as well as by having erect stems. The plant 
which Froelich first described as @. barbata is usually 
considerably larger than typical G. detonsa, with which it 
agrees in its quadrifid corolla. It is a native of Siberia 
and the Caucasus, and in spite of general agreement 
with G. detonsa is readily distinguished by its often 
May, 1915. 
