223 
diametro arcte congesta. Bractee ovate, acute, extus 
- tomentose. Involucri squame. 5, biseriales: exterior 
rigida, ovato-acuminata, valde concava, gibbosa, uniflora, 
flore abortivo ; relique 4 membranacez, floribus duobus, 
3 exteriores medio glandula longitudinali notate. Corolle 
albe, tubo involucro sub duplo longiore sursum latiore, 
limbo bilabiato; labio superiore oblongo-ovato, reflexo, 
tridentato; inferiore bipartito, laciniis linearibus, reflexis, 
Stamina 5: Anthere basi bisetose. Stigmata revoluta. 
Achenia obovata, glabra. Pappus pilis subplumosis. 
Has. Culluay, in the Valley of Canta. 
Amongst all the genera of Labiatiflore, I am unable to 
find any which accords with the present plant, here 
named in compliment to Mr. Bridges, who has already sent 
many excellent plants from the western side of the Andes of 
South America, and from whose exertions much more may be 
expected, In habit it very much resembles some species of 
Echinops. Each head of flowers contains a great number of 
involucres, (mixed with bractez,) which are regularly 3- 
flowered: the outermost scale of the involucre, which is the 
largest and most rigid, always contains, within its deeply 
hollowed base, one imperfect flower; within that are 4-scales 
Containing 2 perfect flowers. The section of a flower, 
(fig. 1,) will give a better idea of the relative situation of 
- the scales of the involucre and bracteas, than can be done 
by words, £r uoa ume M ud 
Tam. XCII. Fig. 1, Transverse section of a flower, with 
the bractea at its base, showing the relative position of 
the 5 scales, or leaflets, of the involucre, 4 external and 
linternal. Fig. 2, Involucre, with its 3 florets, and the 
bractea at the base. Fig. 3, One of the innermost 
flowers, Fig.4, Portion of a hair of the pappus. Fig. 5, 
External scale of the involucre, with its abortive flower. 
Fig. 6, Portion of a hair from the pappus of the latter :— 
magnified. 
III, VERNONIACEE, 
5. Baccharis genistelloides ; aphylla, suffruticosa, caule ram- 
