576 COMPOSITAE 
pera chog 5-5 dm. high. 
Out phollaies well Pasicatiarns in 3-4 series, orbicular to narrowly or broadly ovate with conspicuous 
s margin 
Pappus-bristes 4, persisting on the achene; outer phyllaries orbicular, 4-5 ae pate of desert 
arid a co 
feneiie blatlo ae persisting on the achene; outer phyllaries bilan Piet 2 mm. bro: vai plants of 
Channel Islands. . M. thaiiadie fatale 
Outer sohlasaea? in 1—2 series, the outer much shorter than the i a with narrow scarious margin 
Stems leafy to the inflorescence; leaves not much reduced abov: 
gpsinsinl erect; leaves laciniate-pinnatifid. 3. M. 
Plants depressed (or erect) ; musts n the oh obtuse. 4. M. harose 
Leaves mostly basal, reduced and sparse abov 
Basal leaves pinnatifid with a ona filiform lobes; flower-heads large, the ligules 12-16 mm. 
long. 5. M. californica. 
Basal ald al pinnatifid Brey short, broad, mostly toothed lobes; flower-heads medium to small, the 
i 2-10 mm 
pie. pod" 4-7 mm. high; achenes finely 10-15 striate with the 5 ribs not markedly more promi- 
fo, about 2-3 mm. long; achenes with > tues denticulate crown and 1-2 persistent 
bristles; leaf-margins without tufts of w 6. M. clevelandii. 
Ligules 3-5 mm. long; achenes with an entire crown and no persistent bristles; leaf-margins 
with tufts of wool. vs M. floce ifera. 
—- 8-13 mm. high; achenes 15-striate, ever ib 
es 2-3 mm. long; ee, a all alee jntieimleie essentially aiabsaws. 
. M. sonchoide. 
ays boa 4 sation long; 1-8 pappus-bristles persistent; ee eta a Pg gland- 
ped 9. M. torreyt. 
Perennials; shrubs, stout kaha aceous plants or the more or ee ene forms from a woody root-crown. 
igules yellow; dune plan pied is sebeng ag spina from a 10. M.4 
Ligules pink, rb: or V ect oc tanesine plants 
Heads wt Mn A eats herbaceous or shrubby ony at base (except M. savratilis var. implicata); 
leaves not obovate or oblong-obovate. 
Shans ‘Sechenous, — sisal from a ate seated, branched root, the entire est on 
if present, acute or acuminate at the . M.s 
Stems several from a woody root, usually siitcboieiend at base; entire bicvet ue aan eat or 
broadly acute at : the apex (except in vars. implicata and ‘tenu ifo " vii 
. M. saxatilis. 
Heads 9—12-flowered; shrubs; leaves obovate or oblong-obovate. a M. blair 
1. Malacothrix coulteri Harv. & Gray. Snakes-head or Coulter’s Malacothrix. 
Fig. 5995. 
Malacothrix coulteri Harv. & Gray in A. Gray, Mem. Amer. Acad. II. 4: 113. 1849. 
ne ee coulteri Heller, Mihlechefeee 2: io. 1906. 
ms branching above and sometimes also at base, erect or sometimes more or less decum- 
bent, US dm. high, glabrous and pale. Leaves sinuate-dentate or somewhat pinnatifid, the basal 
m. uline claspi i ; 
oblong or mea ny ong, the cauline clasping, ovate to lanceolate i - 
1 : rminatin branches, short-peduncled; involucres hemispherical, 10-15 
i phyllaries well cated, suborbicular to ovate, with broad scarious margins and a 
broad, purplish reen, central band; ligules pale, yellow to nearly , th ter ones so 
p (6) white €- 
times lined with reddish purple, 5-18 mm. long; achenes light greenish brown, 2-2.75 mm. long, 
4-5-angled, with 2 striae between the sharply sive Ses these extended above the body of the 
achene in short ead: a ee ‘appus-briste eek 
Flats er Sonoran Zone; Saas a, San Joaquin, and Mariposa Counties, central 
California, south to northern: peed, Catifornia and east in the desert r regions to southwestern Utah and Arizona. 
Type ineaticg: California. Collected by Coulter. March-— May 
Malacothrix coulteri var. co 2 ta Jepson, Man. FI. Pl, Calif. 1001. 1925. Heads and phyllaries as in 
M. eoatert var. coulteri; stem-leaves pris in but waited nearly to the midrib into linear divisions; achenes and 
pappus-bristles as in M. coulteri var. coulteri. Ra rely collected; Santa ( Cruz and Santa Rosa Islands in Santa 
Barbara County, the San Pedro hills in phe ‘Raasies County (Abrams a), = Tia Juana, San Diego County 
(Jones), California. Type locality: Santa Cruz Island. Collected by Bran 
2. Malacothrix insularis var. squalida (Greene) Ferris. Island Malacothrix. 
Fig. 5996. 
Malacothrix squalida gyi a Calif. Acad. 2: 152. 1886. 
aE. Williams, Amer. Midl. Nat. 58: 507. 1957. 
Malacothrix Santarls 9 var. Mais Ferris, Contr. Dudley Herb. 5: 102. 1958. 
Glabrous annuals, the stout ig decumbent or sometimes erect, 1.5-4 dm. high, quite densely 
leafy se counhiout, branched at base and above. Leaves sessile, 2-7 cm. long, broadly lanceolate to 
ovate in outline, with ent, Saaanied: acute lobes, the anaes upper leaves a oe, laciniate 
and clasping at the base; heads many, on short, at bracteate peduncles ; aot s 9- 
uter oO 
: oran es ete — Santa Rosa, Santa Bertone and Anacapa Islands 
off the coast of southern terraces, Upoe eraik. eres locality : Santa Cruz Island. Collected by Greene. April-July. 
SS Sout Baviars tcland appear to be quite close to M. insu lacie Wax, ino 
