308 COMPOSITE. Ilemizonia. 



* Receptacle conical or convex, manj'-flowered, all the disk-flowers subtended by narrow and 

 mostly quite distinct chaffy bracts, some of tlieni not rarely fertile: ray-tiowers usually numer- 

 ous and in more than one series, with short and yellow ligules; their akenes obovate-triangular, 

 with very oblique apiculation, usually smootliish: rigid and branching annuals ; with some 

 or all of the lower leaves incisely pinnatifid, and the uppermost clustered around the sessile 

 heads. — Ilartmannia § Olucarpha, DC. Prodr. 



-(— Leaves and bracts not pungent, but the upper gland-tipped. 

 H. macradenia, DC. Stout, hirsute, viscid-glaudular, very leafy : upper leaves linear, 

 entire or laciuiately dentate ; those of the brauchlets and axillary fascicles linear-subulate, 

 truucately gland-tipped : some of these aud most of those crowded around the sessile glom- 

 erate heads, also the bracts of the involucre aud even those of the conical receptacle, beset 

 witli stipitatc tack-shaped glands : heads fully half-inch iu diameter : pappus none. — I'rodr. 

 V. 693; Hook. & Am. Bot. Beech. 356; Torr. & Gray, Fl. ii. 400; Gray, Bot. Calif, i. 363.— 

 Dry open ground, from the Bay of Sau Fraucisco southward. An unpleasantly scented 

 Tarweed. 



4_ ^_- Upper leaves or their lobes and the bracts of the involucre rigid, pungcntly pointed, none 

 gland-tippcd. 



H. Fitcllii, Gray. Villous-hirsute, somewliat viscid, above beset with small scattered tack- 

 shaped glands : leaves some (even of the lower) entire and elongated linear-acerose, very 

 pungent, some of the lower once or twice piuuately parted : bracts of the involucre subulate ; 

 those of the receptacle pointless, soft, bearded with long villous hairs : disk-akeues sterile, 

 with pappus of 8 to 12 linear palea;, fringed or bearded at tip, somewhat united at base, 

 nearly equalling their corolla. — P.acif. R. Rep. iv. 109, & Bot. Calif. 1. c. — Common in 

 California north and east of Sacramento ; first coll. by Rev. Mr. Fitch. 



H. Parryi, Greene. Sparsely or slightly hirsute, sometimes minutely viscid-glaudular: 

 leaves short ; lower sparingly pinnatifid ; upper subulate-acerose, as also the tips of the invo- 

 lucral bracts ; those of the receptacle thiu, villous on the margin, acute or obtuse, but 

 neither pointed nor rigid : sterile disk-akeues with a pappus of 3 to 5 narrowly linear slender, 

 pointed naked palete which equal the corolla. — Bull. Torr. Club, i.x. 16. (Has been inex- 

 cusably confounded with the preceding and following.) — Not uncommon in California from 

 Lake Co. to Sau Beruardino Co., Torreij, Parry, Parish, &c. 



H. piingens, Tore. & Gray. Hirsute or hispid, sometimes only slightly so, hardly .at all 

 viscid or glandular : cauline leaves piuuatifid or the lower bipinuatifid, and the lobes short; 

 those of the brauchlets and fascicles eutire, lanceolate or linear-subulate, with very pungent 

 tips, those around the head little surpassing it : bracts of the receptacle also pungeutly 

 pointed: pappus to disk-flowers uoue. — Fl. ii. 399; Bot. Calif. 1. c. Hartmannia pungens, 

 Hook. & Arn. Bot. Beech. 357 ; Hook. Ic. PI. t. 334. — Dry hills aud fields, from San Fran- 

 cisco Bay southward ; first coll. by Douglas. 



* * Receptacle flat or nearly so, naked among the disk-flowers, which are surrounded by a circle 

 of connate or sometimes distinct bracts : rays golden yellow and with glandular usually slender 

 tubes: some of the pubescence glandular or viscid: no large tiick-shaped or terminal truncate 

 glands. 



H— Rays 12 to 24, oblong-cuneate ; their akenes occupying more than one series, obscurely rugose : 

 disk-flowors as numerous, with wholly sterile or abortive ovary, and small plurisquamellate 

 pappus or none. 



H. corymbosa, Torr. & Gray, 1. c. Erect, corymbosely branched above, hirsute, with or 

 without short-pedicellate glands intermixed : lower or sometimes most of the cauline leaves 

 pinnately parted into linear lobes ; those of the branches narrowly linear : heads rather large 

 (a third to half inch high) : rays 15 to 25, oblong-cuneate : bracts of receptacle well 

 united into a cup : akenes 4-5-nerved or .angled (the nerve of the inner face indistinct or 

 wanting), and with beak short and stout : disk-pappus setosely pluris(iu<amellate. — H. angiisti- 

 fulia, Benth. PL Hartw., not DC. H. macrocephala, Nutt. PI. Ganib. 174. H. balsamifera, 

 Kellogg, Proc. Calif. Acad. ii. 64, t. 13. Hartmannia cori/mbosa, DC. Prodr. v. 694. — W. 

 California, in low grounds, common from San Francisco Bay to Sau Luis Obispo ; first coll. 

 l)y Douglas. 



H. angustifolia, DC. Diffuse, a span to a foot high, hirsutely pubescent and glandular, 

 becoming viscid : cauline leaves all linear, small, eutire : heads corymbosely paniculate or 



