Hesperomannia. | COMPOSITAE. 931 
Tripe VI. CYNAROIDEAE. 
Heads Dipak Bee discoid, the florets all hermaphrodite, tubular and 
deeply cleft, or some of the outer ones enlarged but not ligulate. Anther- 
cells tailed at the bade Style truncate, simple or with 2 short truncate 
branches, generally bulbous at the base of the branches. Pappus of 
numerous bristles. Invol. bracts imbricate in several rows, mostly spiny. 
Leaves alternate, mostly spiny. 
26. CENTAUREA, L. 
Involucral bracts imbricate in several oon with scarious or spinescent 
appendages. Receptacle bristly. Flor of the circumference mostly 
enlarged, sterile, the others tubular, heh hermaphrodite and _ fertile. 
Achenes compressed, affixed by an oblique or lateral areole. Pappus of 
rigid bristles of variable length, or wanting. — Herbs with alternate 
leaves and single or ase heads. 
A large genus of the Old 
ane 83 Melitensis, L. — ro Prod. VI, 593. — An erect annual, 1 to 
2 i high, branching in the upper portion, rough-pubescent and, when 
young, with a little deciduous wool. Radical leaves pinnato- parti 
attenuate into a petiole, those of the stem broadly linear, toothed, decurrent. 
Heads single on a branch, sessile, peor ee Involucre tomentose, 
coriaceous, the ey bracts running ou a trifid or pinnately divided 
spine. Marginal flowers 3—5-cleft, 2 gp od Bristles of pappus 
stiff, in several rows, those of the inner row short and convergent. Florets 
sen 
ui! around Wailuku and an pee also Oahu. A _ native of the Mediterranean 
Sieelah which has found its way also to the Cape, to Chili and California. Another 
plant of this Order, nah Sa mower, Carthamus tinetorius, is occasionally met 
relic of former cultivatio 
Tripe IX. MUTISIEAE. 
Heads homogamous or sometimes heterogamous, with the limb of the 
Stig % bilabiate, at least in the outer florets, rarely all corollas equally 
but deeply divided. Anthers tailed or pointed at the base. Style-branches 
obtuse or truncate. Receptacle mostly naked. Leaves alternate. 
27. HESPEROMANNIA, Gray. 
Heads homogamous, all florets hermaphrodite and — Involucre 
turbinate-campanulate, the bracts imbricate in many row 
chartaceous to coriaceous, the inner bracts longest, pies lnacholase, 
gradually decreasing to the outer ones, which are short ovate. ptacle 
flat, naked. Corollae regular, slender, slightly ampliate above, deeply 
5-cleft into linear acute straight lobes. Stamens affixed to the base of the 
