CARDUACEAE 1175 



the outer bracts often ovate, acute, the inner longer and broader, broadest above the mid- 

 dle, abruptly pointed, ciliolate : achenes 4-4.5 mm. long : pappus-bristles pale, not 

 plumose. 



In sandy soil, Louisiana. Summer. 



21. Laciniaria Nashii Small. Stems slender, 2-5 dm. tall, hirsute, simple. Leaves 

 relatively few ; blades narrowly linear, the lower ones 10-15 cm. long, petioled, the upper 

 much reduced, erect, sessile, passing into the bracts : racemes 5-10 cm. long, very narrow : 

 involucres cylindric, 8-10 mm. high ; bracts ovate and acute to oblong-cuneate or linear- 

 cuneate and acuminate, sometimes abruptly so, all viscid, glandular-punctate : achenes 2.5 

 mm. long, minutely pubescent : pappus-bristles barely barbellulate. 



In pine lands, Manatee, Florida. Summer and fall. 



22. Laciniaria Halei Small. Stems 6-9 dm. tall, simple or sparingly branched, gla- 

 brous or nearly so. Leaves various, the lower with linear blades 1-2 dm. long, the upper 

 blades narrowly linear, much shorter than the lower, not ciliate at the base : heads short- 

 peduncled or nearly sessile, in interrupted racemes : involucres becoming narrowly turbi- 

 nate, 7-9 mm. high ; bracts ovate-lanceolate to oblong-lanceolate, oblong or cuneate, acu- 

 minate, ciliolate, rigid: achenes 3. 5-4 mm. long, closely pubescent : pappus-bristles plumose. 



On prairies, Louisiana. Summer. 



23. Laciniaria Boykinii (T. & G.) Kuntze. Stems 3-6 dm. tall, nearly glabrous. 

 Leaves relatively few ; blades narrowly linear, 5-15 cm. long, punctate, much reduced and 

 acerose above the middle of the stem : heads numerous in a strict spike-like raceme : invo- 

 lucres cylindric, 10-12 mm. high ; bracts lanceolate to linear, erect, acuminate, the inner 

 with light pink scarious tips and margins : achenes 3-3.5 mm. long, pubescent: pappus- 

 bristles plumose. 



In dry or sandy soil, Georgia. Summer. 



24. Laciniaria acidota (Engelm. & Gray) Kuntze. Stems 3-6 dm. tall, glabrous. 

 Leaves numerous ; blades linear-filiform, 3-15 cm. long, acute, commonly glabrous : heads 

 usually numerous, in dense strict spikes : involucres cylindric, 1-1.5 cm. high ; bracts 

 lanceolate to linear-lanceolate or oblong-lanceolate, acuminate or cuspidate-acuminate, 

 glabrous or nearly so : achenes 7-8 mm. long, quite pubescent : pappus-bristles short-plumose 



On prairies, Texas. Summer. 



25. Laciniaria punctata (Hook.) Kuntze. Stems 2-8 dm. tall, sometimes tufted. 

 Leaves numerous ; blades linear to almost acerose, 2-12 cm. long, acute, punctate, some- 

 times sparingly ciliate : heads usually very numerous, in dense partially leafy-bracted 

 spikes and racemes : involucres cylindric or oblong, 1-1.5 cm. long ; bracts ovate to oblong 

 or oblong-cuneate, short-acuminate to cuspidate, lanuginose-ciliate : achenes 5-6 mm. long, 

 somewhat pubescent : pappus-bristles plumose. 



On plains and prairies, Saskatchewan to Minnesota and Montana, south to Texas and New Mexico. 

 Summer and fall. 



26. Laciniaria tenuifolia (Nutt.) Kuntze. Stems 6-12 dm. tall, scape-like, glabrous 

 or nearly so. Leaves numerous, especially on the lower part of the stem ; blades linear- 

 filiform, 5-25 cm. long, or shorter above, where they are much reduced and scattered : 

 spikes or racemes slender : involucres 5-7 mm. high ; bracts ovate to ovate-oblong, linear 

 or oblong-cuneate, acute or acutish, or the inner mucronulate glabrate, the outer keeled : 

 achenes 3 mm. long, densely pubescent : pappus-bristles minutely barbellulate. 



In dry pine lands, North Carolina to Florida. Summer and fall. 



27. Lacinaria laevigata (Nutt. ) Small. Stems 6-10 dm. tall, scape-like. Leaves 

 mainly basal ; blades narrowly linear, 1-4 dm. long, lustrous, abruptly reduced and few 

 above the base of the stem : spikes or racemes rather stout : involucres 7-10 mm. high ; 

 bracts ovate to oblong or linear-oblong, glabrous, the inner mucronulate at the apex, not 

 keeled, usually purple : achenes 4 mm. long, densely hirsute : pappus-bristles minutely 

 barbellulate. 



In low pine lands, Florida. Summer and fall. 



28. Laciniaria Garberi (A. Gray) Kuntze. Stems 3-6 dm. tall, hirsute-tomentose. 

 Leaves rather numerous ; blades narrowly linear, 5-15 cm. long, or shorter above, glabrate 

 in age : heads not contiguous, in narrow racemes : involucres 6-7 mm. high ; bracts lanceo- 

 late to oblong or oblong-cuneate, the outer acute, the inner mucronulate, glandular- 

 punctate and gland-tipped, ciliate, slightly squarrose : achenes 3-3.5 mm. long: pappus- 

 bristles minutely barbellulate. 



In sand, Tampa, Florida. Fall. 



29. Laciniaria pycnostachya (Michx.) Kuntze. Stems solitary or clustered, 6-15 

 dm. tall. Leaves numerous ; blades linear or nearly so, 2-6 dm. long near the base of the 



