230 COMPOSITAE, [ Artemisia. 
25. ARTEMISIA, L. 
Heads heterogamous, rarely homogamous, usually few-flowered. Invol. 
bracts imbricate, unequal, mostly scarious at the edges. Receptacle naked. 
Florets all tubular, those of the circumference female, fertile, 2—3-toothed, 
in one or two rows or sometimes wanting. Disk- florets hermaphrodite, 
5-toothed. Style- branches in the disk-florets truncate. Achenes obovoid, 
rounded at the top. Pappus none. — Erect herbs or shrubs. Leaves 
alternate, usually divided into narrow segments. Heads usually small, 
numerous, nodding. 
A large genus, widely spread over the S ahace and cold regions of the northern 
Ssetilegiened but scarcely penetrating into the tropics 
Involucral bracts linear, longer than the floret : : 1. A. australi 
Inyolucral bracts oyate, scarious, shorter than a florets : - peer parinai: 
1. A. australis, Less. in Linnaea, VI, 522. — DC. Prod. VI, 106. 
— A spreading shrub, 2—3 ft. high. Leaves: canescent underneath or 
on both sides, petiolate, ia of the sterile branches 2—3/ long (including 
a long petiole), pinnatisect with 5—7 oo cuneate or linear obtuse 
segments which rarely are again lobed or cut, the upper leaves of flowering 
branches linear wae Heads globose, ‘ai “not numerous, in leafy ra 
cemes or panicles of 2—3‘ in length which do not project beyond the 
foliage, the meet ce enon crowded with reduced leaflets. Invol. 
bracts canescent, lanceolate or linear-spathulate, herbaceous, the inner 
ones longer than the rt Receptacle conical. Florets 25—40, glan- 
ar. —- Gray, l. c. p. 137. — A. Eschscholtziana, Bess. 
Oahu! only on the highest ridges; Molokai! Maui. 
B var. — Leaves bi-, tri-pinnatisect with acute segments, 3—4‘ long. 
Heads smaller. 
Kauai! 
2. A. microcephala, Hillebr. — A spreading, canescent shrub, 3—5 ft. 
high. Leaves smaller, 1'/2—2‘, the lower pinnatisect with linear acute 
canescent bel Heads small, about 1”, numerous in open panicles 
which are yond the foliage, the peduncles with few short 
linear bractlets. Invol. bracts glandular, ovate, scarious, with a gree? 
8, 
almost Female florets 11—16, their corollae linear, bidentate, glan- 
dular, with style-branches exserted and reflexed. Hermaphrodite florets 
9—12, broad tubular or urceolate, glandular, as are the achenes. — A. 4 
stralis, var. microcephala, Gray, in Mann's Enum. no. 245. 
Hawaii! Central Plateau, 5000—6000 ft. 
