suppL p. 354; Hook. lot. mag t. 3730; Fisch., Meyer, &■ Lallem. ind. sem.
St. Petersb. 1840. --
California, Douglas! Nuttall! Common in cultivation__Closely resembles
the preceding, except in the conspicuous rays, rather larger heads, and
entire absence of the pappus ; the corolla of the disk is also much longer ; the
lobes sparsely barbellate. The cultivated specimens are often entirely glabrous.
We are only acquainted with a single species of Hologymne.
122. BURRIELIA. DC. prodr. 5. p. 663.
Heads many-flowered; the ray-flowers 3-12, pistillate, ligulate (rarely
very short); those of the disk tubular, perfect. Scales of the spreading or
somewhat campanulate involucre 3-12, oval, acuminate, in 1-2 series,
nearly equal, a little longer than tha disk. Receptacle conical, papillose.
Corolla of the disk with a slender tube, and an expanded 5-toothed limb.
Branches of the style terminated by a very short obtuse cone. Achenia
linear-fusiform or tetragonal, often somewhat compressed. Pappus of 2-5
lanceolate-awned scales or subulate awns, about the length of the corolla, or
sometimes none .'—Slender and somewhat pubescent annual (Californian)
herbs ; with opposite linear entire and sessile leaves, and solitary heads on
slender peduncles, terminating the stem or branches. Flowers yellow: the
anthers yellowish.
§ 1. Pappus aumed; that of the ray similar lu t more slender.—Burrielia
proper.
* Rays very short: appendages of the style acute: lobes of the disk-corolla glabrous.
1. B. microglossa (D C .! 1. c .): villous-pubescent; scales of the involucre
and rays 3-4, the included ligules shorter than the styles; disk-flowers 6-12*
achenia attenuated, minutely scabrous; pappus 2-4- (or the in rays 1-1
awned. " J ’
California, Douglas!—Plant resembling a Pectis, 3-4 inches high • the
heads appearing discoid. Leaves often an inch long, and a line wide. ’
* * Rays obovate or oblong, exserted: lobes of the disk-corolla slightly barbellate. '
2. B. tenerrima (DC.! 1. c .) : stem simple, filiform, nearly glabrous;
scales of the involucre and the obovate rays about 5 ; achenia slender, glabrous;
pappus 1-3-awned. - 8
. California, Douglas!— Stem 3-4 inches high. Leaves filiform, half an
inch long. Rays short. , -
3. B. parviflora (Nutt.): much branched, diffuse, almost glabrous; scales
of the involucre and the oblong rays about 8 ; achenia minutely scabrouscanescent,
lmear-obconical; pappus 2-3-awned from a broad base._Nutt ’
m trans. Amer. phil. soc, l. c. p. 381.
St Barbara California, Nuttall /—Stems 2-3 inches high. Leaves near-
ly fihlorm, half an inch long, pubescent when young. Heads many-flowered,
2-3 lines long ; involucre turbinate. Rays short. Scales of the pan-
pus triangular-ovate, short, abruptly awned.
4. B. gracilis (DC.) : appressed, pubescent or hairy; stem sparingly
branched; scales of the involucre and the oval rays 10-14; achenia fusiform,
compressed-4-sided, or those of the ray obcompressed ; pappus of 4-5,
or in the rays 2—3, lanceolate-subulate awns.—DC.! prodr. 5. p. 664 ;
Bartl. ind. sem. hort. Gcett. 1837, &fin Linncea, 12. suppl. p. 80 ; Hook. Sf
Am . lot. Beechey, suppl. p. 354 ; Hook. lot. mag. t. 3758. B. gracilis &
B. longifolia, Nutt. 1. c.
California, Douglas! Nuttall!—Plant 5-10 inches high, weak, decumbent.
Leaves about 2 inches long, and a line wide, slightly fleshy. Expanded
heads half an inch or more in diameter. Rays rather longer than
the involucre.
§ 2. Pappus none.—Baeria, Fisch. & Meyer.
5. B. chrysostoma: appressed-pubescent or hairy; stems loosely branched;
scales of the involucre and the elliptical rays 10-13; achenia glabrous.—
Baeria chrysostoma, Fisch. fy Meyer! 2nd ind. sem. St., Petersl. {Dec.
1835) p. 29 ; Don, in Sweet, Brit. fl. gard. $er. 2. t. 395 ; DC. prodr. 7.
p. 254 ; Hook, if Am . lot. Beechey, suppl. p. 354. Burrielia (Amphia-
chaenia) hirsuta, N u tt.! 1. c.
California, Fischer if Meyer, Douglas! Nuttall!—Plant 6-12 inches
high, glabrous below. Leaves l£ to 3 inches long, 1-2 or 3 lines wide,
somewhat channelled above and connate, at the base, as in the other species.
—This and the preceding species are common in cultivation, and resemble
each other so closely that they are apparently undistin guish able, except by
the absence of the pappus in B. chrysostoma. As similar isomorphous species
occur in Lasthenia, Hymenoxys, &c., we cannot consider the mere
absence of the pappus as of genferic . consequence in this tribe. But
since many botanists hold a different opinion, we think it inexpedient to increase
the synonymy by employing the somewhat anterior name of Baeria
for the whole genus.
123. DICHiETA. Nutt, in trans. Amer. phil. soc. {ser. 2.) 7. p. 383.
Heads many-flowered ; the ray-flowers 5-12, ligulate, pistillate; those of
the disk tubular, perfect. Scales of the. somewhat campanulate involucre as
many as the rays, nearly equal and in a single series, ovate, scarcely as long
as the disk. Receptacle conical, alveolate ; the alveoli toothed. Corolla of
the disk with an inflated 5-lobed limb; the apex of the lobes and the slender
tube minutely glandular-hairy. Branches of the style truqcate, minutely
barbellate at the, apex. Achenia attenhate-obconical, 4-angular, somewhat
hairy. Pappus of the ray and disk similar, composed of 4-8 oblong nerveless
obtuse chaffy scales, (equalling the tube of the 'corolla,) which are fim-
briate-laciniate at the apex, and 2 (rarely 3 or 4) subulate awns about the
length of the corolla.—Annual small (Californian) herbs, growing in wet
places and on the margin of ponds, villous-hairy when young, nearly glabrous
when old; with opposite laciniate-pinnatifid leaves, or the upper linear
and entire. Heads terminating the stem or branches. Flowers yellow.
This genus is, as it were, intermediate between Hymenoxys and Burrielia; D.
tenella having exactly the habit of the latter, and D. uliginosa nearly that of Hymenoxys
(Ptilopsis) mutica; which, moreover, presents a similar pappus, except that
the intermediate awns are wanting.