Hemizonia. COMPOSITiE. 399 



late, serrulate, several-nerved; rather glabrous; the cauline somewhat vil- 

 lous, long and linear, the lower opposite and serrulate ; the heads bracteate 

 and in clusters of 2-3: the achenia obovate, obtuse, with an inflexed rostelli- 

 form stipe ; the chaff only a marginal series. 



§ 4. Heads many-floicered, nearly solitary: receptacle chaffy throughout ; the 

 chaff, with the scales of the involucre and the upper leaves, subulate-spines- 

 cent : pappus none. 



6. H. pungens : herbaceous, somewhat ligneous at the base ; stem sparingly 

 branched, setose with whitish hairs; leaves crowded ; the lower pinnatifid, 

 with oblong or oblong-lanceolate spinose-mucronate lobes ; the upper and 

 those of the axillary fascicles linear, entire, rigid, spinescent, the recurved 

 margins papillose-hairy ; heads somewhat solitary, bracteate; scales of the 

 involucre spinescent, glandular, nearly equalling the 2-cleft rays ; achenia of 

 the ray gibbous, with a terminal very oblique areola; receptacle wholly 

 chafTy ; the chafT lanceolate-subulate, spinescent. Hook. Sf Am. — Hartman- 

 nia? pungens, Hook. Sf Am. hot. Beechey, suppl. p. 357 ; Hook. ic. pi. 

 I. 334. 



California, Douglas. — " This is a very remarkable plant, more like a 

 species of Navarettia among the Polemoniaceae than one of the present order. 

 We can find no trace of it in DeCandoUe's Prodromus." Hook. S^ Am. 



§ 5. Heads feio-ynany-flowered, not bracteate, corymbose : receptacle chaffy 

 throughout ; the scales of the outer series united : pappus none : leaves 

 glandless, entire or serrulate : flowers white ? 



7. H. filipes (Hook. & Arn.) : stem sufFruticose, erect, simple, hirsute with 

 soft hairs; leaves linear, entire, 1-nerved, somewhat hirsute with soft hairs, 

 not glandular ; the lower elongated, acuminate, with smaller ones fascicled 

 in their axils ; the upper much smaller and bractieform, with black glands ; 

 corymb loose ; the rather rigid branches filiform and glabrous; heads solitary 

 on long pedicels, few-fiowered ; scales of the obconical ebracteate involucre 

 few, hirsute; achenia oblong, attenuate at the base. Hook. Sf Am. bot. 

 Beechey, supjd. p. 356. 



California, Douglas. — " The corymb is lax, the primary branches bear a 

 few glanduliferous bracteas or leaves ; but the stalk that supports the capitu- 

 lum is slender, quite naked, and rigid. In habit it is very dissimilar to the 

 other species." Hook. Sf Arn. — This species, which is unknown to us, 

 would seem to have many points of resemblance to the Osmadenia tenella 

 ofNuttall. 



8. H. luzulfefolia (DC.) : stem erect, tomentose-canescent, corymbose at the 

 summit ; the branches and the involucre hirsute and somewhat viscid ; leaves 

 linear-lanceolate, silky-villous, not glandular ; the lower elongated, tapering 

 to the base, denticulate, 3-5-nerved, sometimes opposite ; involucre hemi- 

 spherical, many-flowered, nearly bractless ; achenia of the ray obovate, ob- 

 compressed, somewhat gibbous, with a terminal obtuse sessile areola; those 

 of the disk abortive. — DC! prodr. 5. p. 692. H. sericea, Hook. Sf Arn. 

 bot. Beechey, I.e. 



Caiilbrnia, Douglas. — Perennial? herbaceous, 8-12 inches high. Lower 

 leaves 4-5 inches long, 3-4 lines broad, and not unlike those of a Luzula ; 

 the appressed silky pubescence becoming loose and villous-tomentose on the 

 old leaves, at length somewhat deciduous : those of the branches or loose co- 

 rymb one-fourth to half an inch long. Heads 3-4 lines broad ; the scales of 



