308 COMPOSITiE. Hemizonia. 



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

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

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

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

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

 heads. — •>g;fM«*»M»««w*' § Olocarpha, DC. Prodr. 



^'Leaves and bracts not pungent, but the upper gland-tipped. 



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

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

 truncatelv gland-tipped : some of these and most of those crowded around the sessile glom- 

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

 with stipitate tack-shaped glands : heads fully half-inch iu diameter : pappus none. — Prodr. 

 V. 69.3 ; Hook. & Arn. Bot. Beech. 356: Torr. & Gray, Fl. ii. 400 ; Gray, Bot. Calif, i. 36.3.— 

 Dry open grouml, from the Bay of Sau Francisco southward. An unpleasantly scented 

 Tarweed. 



•i^ H— Upper leaves or their lobes and the bracts oi the involucre rigid, pungently pointed, none 

 gland-tipped. 



H. Fitchii, Gray. Villous-hirsute, somewhat viscid, o.bove beset with small .scattered tack- 

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

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

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

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

 nearly equalling their corolla. — Pacif. R. Rep. iv. 109, & Bot. Calif. 1. c. — Common iu 

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



H. Parryi, Greene. Sparsely or slightly hirsute, sometimes nnnutely viscid-glandnlar : 

 leaves short ; lower sparingly pinnatifid ; upper suhulate-acerose, as a'lso the tips of the invo- 

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

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

 pomted naked palea; which equal the corolla. — Bull. Torr. Club, ix. It. (Has been inex- 

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

 Lake Co. to San Bernardino Co., Torrc.jj, Parrti, Parish, &c. 



JH. pungens, Torr. & Gray. Hirsute or hispid, sometimes only slightly so, hardly at all 

 viscid or gliindular : cauline leaves pinnatifid or the lower bipinnatifid, and the lolies short ; 

 those of tlie brauchlets and fascicles entire, lanceolate or linear-subulate, with very pungent 

 tips, those around the head little surpassing it : bracts of the receptacle *[so J)ungentl}r 

 ]>oiuted : pappus to disk-flowers none. — Fl. ii. 399 ; Bot. Calif. 1. c. Hurtincnnia ptinr/ens, 

 Hookr& Arn. Bot. Beech. 3.57 ; Hook. Ic. PI. t. 334. — Dry hills and fields, frcm San Fran- 

 cisco Bay southward ; first coll. by Douglas. 



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

 of connate or sometimes distinct bracts: rays golden yellow and with glandular usiall}' slender 

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

 glands. 



-1— Rays 12 to 24, oblong-cuneate ; their akeues occupying more than one series, obscunh' rugose : 

 disk-flowers as numerous, with wholly sterile or abortive ovary, and small pluriscuamellate 

 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 caul ne 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 recepti,cle 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 plurisquamellate. — H. nu/usti- 

 folia, Benth. PI. Hartw., not DC. //. macrorepha/n, Nutt. PI. Gamb. 174. H. balsamifra, 

 Kellogg, Proc. Calif. Acad. ii. 64, t. 13. Harfmannia rnri/)nhosa, DC. Prodr. v. 694. — W. 



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

 by Douglas. 



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

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



