350 COMPOSIT.E. Helenium. 



^— -i— Heads solitary or few on long (sometimes foot long) peduncles, terminating the stem or 

 lax branches ; disk depressed-globose or almost hemispherical : leaves en ire. 



H. Bigelovii, Gray. Almcst glabrous : stem simple or loosely branched, 2 or 3 feet high : 

 leaves from narrowly to oblong-lanceolate, the radical oblong-spatulate. elongated : pedun- 

 cles mostly slender : disk of the head three-fourths globose at maturity, two-thirds to three- 

 fourths inch iu diameter, equalled by the rays : palete of the pappus ovate-lanceolate or 

 subulate and awn-pointed, considerably shorter than the corolla. — Pacif. R. Kep. iv. 107, 

 Proc. Am. Acad. ix. 205, & Bot. Calif, i. 39.3. — Wet ground, California, not rare from Lake 

 Co. to San Bernardino Co. ; first coll. by Bir/e/ow. 



H. Bolanderi, Gray. Somewhat furfuraceou.s-pubescent : .stems stout, often simple, 1 or 2 

 feet iiigh : leaves oblong to ovate-lanceolate, or lowest obovate : peduncles thick, commonly 

 upwardly enlarged and fistulous : disk of the head decidedly broader than high, inch or 

 more wide : rays often inch long : paleaa of pappus lanceolate or subulate, with slender 

 awn, almost equalling disk-corolla. — Proc. Am. Acad. vii. 358, ix. 204, & Bot. Calif. 1. c. — 

 Low grounds near the coast, northeastern part of California, Bolander, &c. 



§ 3. LEPTOrODA. Rays neutral, very numerous, mostly surpassing the linear 

 bracts of the involucre, cuneate, 3-5-cleft, yellow, as are also mostly the flowers 

 of the broad disk : pappus of thin-scarious wholly nerveless sometimes lacerate or 

 fimbriate palea^ : simple-stemmed perennials (sometimes biennials ?), from slender 

 or filiform rootstocfes ; virgate stem continued into an unusually long solitary 

 peduncle, the apex of which is mostly turbinate-thickened under the large and 

 broad head : leaves narrowly or not at all decurrent, — Gray, Proc. Am. Acad, 

 ix. 204. Leptopoda, Nutt. Gen. ii. 174; Ell. Sk. ii. 445; Torr. & Gray, Fl. ii. 

 386, excl. § 2. 



* Receptacle ovate-conical and the disk semi- to sub-globose: involucre soon reflexed and the rays 

 (over half-inch long) drooping in the manner of Euhthnium: nearly glabrous, with somewhat 

 elongated-lanceolate mostly entire cauline leaves, but no conspicuons radical tuft : akenes more 

 or less hair}' on the ribs. 



H. Curtisii, Gray. Stem slender, 2 or 3 feet high : disk of the head half-inch in diameter, 

 surpassed by the rays : paleai of the pappus almost entire, obovate, muticous, about one 

 third the length of the disk-corolla. — Proc. Am. Acad. I. c. Leptopoda integrlfolia, M. A. 

 Curtis in Torr. & Gray, PI. ii. 387, under L. brevifoUa, var. — Near Raleigh, N. Carolina, 

 M. A. Curtis. 



H. flmbriatum, Gray, 1. c. Less slender : disk two-thirds or three-fourths inch broad, 

 equalled l>y the rays: palcaj of the pappus broad, dissected from summit to beyond the 

 middle into many capillary bristles. — Ga'dlardia Jiiuhriata,M'u:\\-s.. PI. ii. 142. Leptopoda 

 Jimbriata, Torr. & Gray, PI. 1. c. — Low pine barrens, Florida and Texas. 



* * TJcceptacle and disk depressed-hemispherical or flatter: involucre and rays merely horizontal 

 or tardily recurved: tiowcring stem usually from a rosuhite cluster of radical leaves: cauline 

 leaves gradiuilly diminished upward, the uppermost usually bracteiform and subulate, all some- 

 what fleshy. 



H. Nuttallii, Gray, 1. c. A foot or more high, with nearly the foliage of the preceding 

 and head of the following: ovary and akenc glabrous aiul glandular-atomifcrous : paleai of 

 the pappus oval or oblong, more or less ei'ose or lacerate, muticous, or some of them aristel- 

 late. — Leptopoda Helenium, Nutt. Gen. ii. 174, excl. syn.? L. denticulata, Nutt. Trans. Am. 

 Phil. Soc. vii. 372. L. dectirrens, Macbride in Ell. Sk. ii. 446, form with denticulate leaves. 



— Damp ground, S. Carolina to Florida and Louisiana. 



Var. incisum, Gray, 1. c. Leaves incised or sinuate-pinnatifid in the manner of the 

 following. — Leptopoda incisa, Torr. & Gray, Fl. ii. 387. — Georgia, Le Conte. 

 H. vernale, Walt. Somewhat puberulent or tomentulose and viscidulous, a foot or two 

 high: ])rincipal leaves in a radical tuft, spatulate-lanceolate or narrower, 4 to 6 inches long, 

 from repand-denticulate to inciscly pinnatifid ; upper cauline small, linear-subulate and 

 bract-like: disk of the head two-thirds or three-fourths inch broad, yellow: akenes pubes- 

 cent: palepe of tlie pappus obovate or s]>atulate, with hvera.te or fimbriolate-toothed summit. 



— Wait. Car: 210; Gray, Proc. Am. Acad. ix. 2U5. Ltplcpuda pabcrala, Macbride in Ell. 



