306 COMPOSITE. Madia. 



«iW>M. glomerdta, Hook. A foot or so high, rigid, very leafy, hirsute, glandular only toward 

 the inflorescence : leaves narrowly linear : heads glomerate : rays 2 to 5 or sometimes none, 

 not surpassing the about equal number of disk-flowers : akenes (2 lines or more long) narrow, 

 those of the disk 4-5-angled ; ot the ray somewhat curved and 1-nerved on each face. — Fl. 

 ii. 24; Grav, I.e. Amida hirsuta & A. gracilis, Nutt. I.e.; Torr. & Gray, I.e. — Rocky 

 Mountains of Colorado to Saskatchewan, Washington Terr., Oregon, and the Sierra Nevada 

 in California. 

 § 3. n.\KPiECj(RPUS. Ligules very short and inconspicuous, not surpassing 



the solitary fertile disk-flower, all destitute of pappus : corolla glabrous. — Gray, 



1. c. Harpmcarpus, Nutt. 1. c. 389. 



M. filipes, Gray, 1. c. Slender annual, a span to a foot or more high, hirsute, glandular 



above, paniculately branched; the small heads (a line or two long) on long filiform pedun- 

 cles : leaves narrowdy linear : bracts of the involucre 4 to 8, lunate and strongly carinate in 

 fruit, almost destitute of free tips, hispid-glandular : bracts of receptacle united into a 3-5- 

 toothed cup : ray-akenes obovate-lunate, the tip somewhat pointed by a small epigynous 

 disk: disk-akene straiglit and obliquely obovate. — Sclerocarpus exiyaus, Smith in Eees 

 Cycl.? Harpcecarpus madarioides, Kutt. 1. c. H. exiguus. Gray, Bot. Mex. Bound. 101. — 

 Open grounds, from S. California to British Columbia near the coast, and eastward to 

 Idaho. 



123. HEMIZ0N£:LLA, Gray. (Diminutive of Hemizonia) — Little 

 annuals of Pacific N. America ; with somewhat the aspect and characters of the 

 Harpcecarpus section of Madia, hirsute-pubescent and above glandular, diffusely 

 branching : leaves linear, entire, opposite or some of the upper alternate : heads 

 in the forks and cymosely clustered, terminating the branchlets, short-pedun- 

 cled, small (a line or two in length) ; the very small corollas yellow. Involucre 

 glandular-hispid on the back. — Proc. Am. Acad. ix. 189, & Bot. Calif., i. 360. 

 Hemizonia § Hemizonella, Gray, Proc. 1. c. vi. 548. 



^H. Durandi, Gray. A span high: eariiest heads slender-peduncled : akenes narrowly 



oblong-obovate or somewhat fusiform, manifestly obcompressed with the inner face .slightly 

 angulate, tipped with a short but conspicuous incurved beak. — H. Durandi & H. parvula, 

 Gray, Proc. Am. Acad. ix. 189. Hemizonia Durandi & H. parvvla, Gray, Proc. Am. Acad, 

 vi. 549. — Dry ground, California, from the Yosemite VaUey to Washington Territory; first 

 coll.' by Prutten. 

 H. minima, Gray, 1. c, with syu. An inch or two high : peduncles all shorter than the 

 heads : ray-akenes obovate, less incurved, much oljcompressed, the beak obsolete or a minute 

 inflexed apiculation. — Dry sterile soil, California, through the eastern ranges of the Sierra 

 Nevada, from Mariposa Co. northward, Dreircr, Matthews, &c. 



124. HEMIZONIA, DC. Taeweed. (Composed of ^fjn, half, ^,ivr,, gir- 

 dle, from the half-enclosed ray-akenes.) — Californian herbs, nearly all annuals 

 or biennials, usually glandular, viscid, and heavy-scented; with alternate or some- 

 times opposite leaves, and middle-sized or small heads of yellow or white flowers, 

 the anthers commonly brownish. Fl. summer or later. — Torr. ct Gray, Fl. ii. 

 396 ; Beuth. & Hook. Gen. PI. ii. 394; Gray. Proc. Am. Acad. i.x. 190,' xix. 17, 

 & Bot. Calif, i. 361. Hemizonia, Hartmanuia, in part, & Cali/cadem(t, DC. 

 Prodr. V. 692-69.5. 



§ 1. EuiiEMizoNiA, Gray, 1. c. Ray-akenes only fertile, obovate-triangular, 

 with depressed terminal areola hardly eccentric, glabrous, smooth and even: 

 disk-akenes abortive and without pappus : annuals, a foot or so high ; with entire 

 or merely denticulate and mostly linear leaves, and white or yellow flowers : rays 

 3-lobed. — Hemizonia, DC. (the typical species of both sections). 



