972 CRYPTOGAMIA. Class XXIV. 
15662 lanata Ach. 
woolly 
shrubby 
f all sea. Gr.Bl rocks Eng. bot. t. 846 
15663 pubescens Ach. 
pubescent 
entangl. tufts 
3 aut. Bl 
rocks Eng. bot. t. 2318 
15664 heteromalla E. B. 
variable 
rough patch 
3 aut. Bl 
bark of trees Eng. bot. 2246 
2551. US'NEA. Ac//.. 
1S6Q5 florida Ach. 
USNEA. 
flowering 
erect 
Sp. 3—10. 
2| wint. Gsh 
old trees Eng. bot. t. 872 
15665 plicata Ach, 
pendulous 
4 wint. Gsh 
old trees Eng. bot. t. 257 
P h'lrta Ach. 
hairy 
nearly erect 
2 wint. Gsh 
old trees Eng. bot. 1. 1354 
156C7 barbata Ach. 
bearded 
pendulous 
4 wint. Gsh 
old trees Eng. bot. t. 258. f. 2 
/3 articuldta Ach. 
jointed 
pendulous 
4 wint. Gsh 
old trees Eng. bot. t. 258. f. 1 
2358. COLLE'MA. Ach 
15668 nigrum Ach. 
COLLEMA. 
black 
Sp. 27—41. 
regular patch 3 wetw. Bl.G 
calcar. rocks Eng. bot. 1161 
15669 cheileum Ach. 
lipped 
round, patch 
1| wet w. Bl.G 
roots of trees 
15670 fragrans Ach. 
fragrant 
small patches 
i wetw. D.Ol 
trun. of elms Eng. bot. 1912 
15671 crispum Ach. 
crisp 
round, patch. 
1 wet w. Gl. 
on the grou Eng. bot. 834 
15672 tenax Ach. 
tough 
lobed tuft 
1 wetw. G 
moist places Eng. bot. 2349 
156^3 plicatile Ach. 
plaited 
lobed tuft 
1 wet w. Ol. G 
wet rocks Eng. bot. 234S 
15674 fluviale Ach. 
floating 
TTi any-parted 
— wet w. Br 
calcar. rocks Eng. bot. 2039 
15675 melEe'num Ach. 
blackish 
X w'et w. Br 
/3 margindle Ach. 
marginal 
imbric. lobes 
1 sum. Ol 
Highlands Eng. bot. 1924 
15676 fasciculare Ach. 
fascicled 
roundish 
2 aut wi Br 
trun. of trees Eng. bot 1162 
15677 cretaceum Ach. 
15678 corrugatum Ach. 
cretaceous 
wrinkled 
minute dots 
small patches 
y| wint. Br 
i wint. D.G 
chalk stones Eng. bot. 738 
rocks, sea co. Dillenius, t. 19. f. 19 
15679 palmatum Ach. 
palmated 
lobed patch 
1 spr. su. Br 
sand. ^Tound Eng. bot. 1635 
15680 granulatuin E.B. 
granular 
imbric. patch 
1| wet w. Br 
gravel walks 
15681 multipartitum E.B. many-parted 
lobed patch 
3 sum. 01.G 
rocks & walls Eng. bot. 2582 
15682 saturninum Ach. 
dingy 
leafy 
2 all sea. Bl.G 
trun. of trees Eng. bot. 1980 
15683 Burgessii Ach. 
Burgess's 
leafy 
2 all sea. Gl. 
trun. of trees Eng. bot. 300 
15684 nigrescens Ach. 
blackish 
leafy 
2 all sea. D.G 
trun. of trees Eng. bot, t. 345 
15685 flaccidum Ach. 
flaccid 
leafy smooth 
2 all sea. D.G 
Scotland Eng. bot. 1. 1653 
15685 furvum ^cA. 
rough 
rugose memb. 
2 all sea. D.G 
trun of trees Eng. bot. 1. 1757 
15687 scotinum Ach. 
naked 
flat patches 
1| sum. Ol 
old walls 
/? sinuatum Ach. 
sinuous 
flat patches 
li sum. Ol 
old walls Eng. bot. 772 
History, Use, Propagation, Culturey 
2.S.57. Usnea. This word is said to have originated in the Arabic dchnch or achn^n, which is, according to 
Golius, the name by which the Arabian physicians designate Lichens in general. Crustaceous branched tufts, 
usually hanging down from the substances on which they grow 
