CARDUACEAE 1335 
and rocky soil, in the mountains of rom N. C. and Tenn., and in various prov- 
inces, to Minn. and Mich.—Sum.-fal 
22. .) 0 
blades of the lower iem linear to elliptie, pov ios I pci ner eaters 
of the dpi 10-15 mm. long in typical plants, s small moun- 
tain forms; glabrous or nearly 80, d with sli Po 'spatulate t tips, becoming 
definitely spatulate in the i racts and nearly ov n the outer 
r cilia o 
scarious margin, at other times markedly serious margine but WE foliaceous 
and thick: achene 4-6 mm. long. [L. squarrulosa Michx.]— Plains, hillsides, 
and open woods, various Diosc Fla. to Ill., Mieh., and Mass Sum fall. 
23. L. Shortii Alexander. Stem 6-9 dm. tall, ipu B blades of the 
didis dis euren very HI cm. brac of the involucre with a very 
narr argin, otherwise quite oe. a ely short- duse 
very spatulate he inner nearly linear, 10-12 mm. lon ng: achene about 5 mm. 
long.—Dry ocky soil, various provinces, Miss. and La., to Ark. and Ohio. 
— Sum. “fall. 
. Tracyi Alexander. Stem about 4 dm. or more tall, densely pubescent: 
blades of the lower leaves linear, very scabrous: ges of the involucre rounded 
at the tip, somewhat ‘pa atulate, pubescent; inner ones 7-8 mm. long: achene 
about 5 mm. long.—Baldwin Co.. ., in the Coastal Plain of Ala.—Fall. 
20. L. Ruthii Alexander. Stem 3-16 dm. tall, pubescent: blades of the lower 
leaves linear to elliptic glabrous or nearly so: involucral bracts rather narrowly 
eaae usually green, lightly pu ene narrowly if at all searious-margined, 
r braets 8-11 mm. long: e 4-5 mm. lon ng.—Woods and thickets, 
bem pisa chiefly TA Blue Rides and pear IM Ga. io Tenn. and 
N. C.—Sum.-fall. 
17. AMMOPURSUS Small, Perennial, succulent, caulescent herb, the 
stem from a long, perpendicular, fleshy tap-root. Leaves alternate, fleshy: 
blades narrow, entire, punctate, sessile. Heads solitary or in panicles, r not 
radiate, erect. Involucre cylindric-campanulate, many-flowered: bracts broad, 
in si j j 
Flowers perfect. Corolla rose-purple: tube slender-cylindrie: throat 
ide mon the tube, more or less urceolate: limb slightly zygomorphic: lobes 5, 
spreading, about as long as the throat. Stamens included: filaments filiform- 
subulate: unes linear, rounded or emarginate at the apex, eordate at the base, 
the lobes rounded. Style filiform. igmas 
filiform, 20 longer than the s Achene 
fusiform, 10—12-ribbed, pubes 'appus 
of numerous capillary baibellate bristles in 
two serie s,t e outer shorter than the inn nner, the 
inner as iene as or longer than the achene 
—One species 
1. A. Ohlingeri (Blake) Small. Stem 2-11 
acute, glabrous: involucre about 2 em. long; 
