2 
i 

Compositaceae 405 
II. Involucre-bracts not united; rays none; herbage viscid-pubescent. 
- HULSEA (p. 406) 
‘HH... Akenes 5—10-ribbed; pappus-scales acuminate or aristate. 
J. Involucre-bracts erect. ACTINELLA (p. 407) 
JJ. Involucre-bracts spreading or reflexed. HELENIUM (p. 407) 
GG. Receptacle with bristle-like chaff. GAILLARDIA (p. 407) 
FF. Heads rayless. 
* K. Involucre-bracts with white or purplish tips. HyYMENOPAPPUS (p. 405) 
KK. — Involucre-bracts green to the tips. 
L. Involucre-bracts somewhat united; corollas yellow. ERIOPHYLLUM (p. 405) 
LL. Involucre-bracts not united; corollas yellow or white or flesh-colored. 
CHAENACTIS (p. 406) 
JAUMEA 
Glabrous, in salt marshes. Leaves opposite, entire, fleshy, linear. Heads incon- 
spicuously radiate, terminal, peduncled; involucre-bracts fleshy, membranous, the outer 
shortest; receptacle conic. Ray-flowers in ours 6—10, yellow, not exceeding the disk- 
flowers. Disk-flowers yellow. Akenes linear, 10-veined, somewhat angled. Pappus 
none (ours). (Honor of I. H. Jaume St. Hilare, a French botanist.) W. . 
J. carnosa Gray 
BAERIA GOLD FIELDS 
Annual; ours 7.5——25 cm. high, strigose-pubescent. Leaves opposite, sessile, linear, 
entire (ours). Heads radiate, small, terminal, peduncled; involucre-bracts as. many as 
ray-flowers; receptacle conic to subulate. Ray-flowers 5—15, pistillate, fertile, exceeding 
the disk-flowers, spreading, yellow, O—3-toothed. Disk-flowers yellow, 5-lobed. Akenes 
narrowly club-shaped. Pappus in ours of 4——5 chaffy awns. (Honor of K. E. von 
Baer, a Russian botanist.) U. B. aristosa How. 
; LASTHENIA 
Annual, glabrous, in salt marshes. Leaves opposite, entire, sessile. Heads radiate 
or rayless, small, terminal. Involucre-bracts in | series, united by their edges; receptacle 
conic. Ray-flowers yellow, often aparently none because so short or so little ligulate. 
Disk-flowers yellow, 4—5-lobed. Akenes linear to oblong, flattish, O—3-veined, mar- 
ginless. Pappus in ours of 5—10 awl-shaped chaffy scales. (Honor of Lasthemia, a 
pupil of Plato.)  U. L. glaberrima DC. 
HYMENOPAPPUS 
Biennial or perennial; stem grooved-angled, erect. Leaves alternate, | 
tid (ours). Heads rayless, many-flowered; involucre-bracts 6—12, their tips scarious 
and usually colored. Flowers yellow to whitish yellow. Akenes obpyramidal, 4—5-an- 
gled, the faces 1—-3-veined. Pappus none or of 10—20 scales (ours); scales obtuse, 
hyaline. (Gk. hymen==a membrane, pappos—pappus; because the pappus-scales are 
hyaline.) E. H. filifolius Hook. 
ERIOPHYLLUM WOOLLY SUNFLOWER 

3-pinna- 
Floccose-woolly. Leaves alternate or partly opposite. Heads radiate or rayless, 
peduncled, many-flowered; involucre-bracts in 1—2 series, erect, oblong or narrower, 
green, united. Ray-flowers yellow, ligulate and distinct or so short that there is practically 
none. Disk-flowers yellow. Akenes narrowly club-shaped to cuneate-oblong, usually 
4-angled. Pappus of chaffy blunt veinless scales. (Gk. erion—wool, phyllon=—a leaf.) 
