168 NORTH AMERICAN FLORA [Volume 34 



3. Boebera roseata Rydberg. 



Dyssodia fastigiala DC. Prodr. 5: 640. 1836. Not Boebera fasti giata H. B. K. 1820. 



A branched annual; stem 2-4 dm. high, somewhat crisp-hairy; leaves opposite, 2-4 cm. 

 long, pinnatifid or bipinnatifid, with linear-oblanceolate, often toothed, spinulose-tipped divi- 

 sions, scabrous-hispidulous on the veins; heads often short-peduncled; involucre turbinate, 

 about 7 mm. high and as broad; principal bracts about 8, oval, obtuse, usually tinged with 

 rose, usually with a single or no gland; accessory bracts fewer, linear, short-ciliate below the 

 middle; ray-flowers few; ligules small, oblique, about 1 mm. long; disk-corollas 3 mm. long, 

 like those of B. papposa; achenes 4 mm. long, compressed, somewhat angled, hirsute; pappus 

 4-5 mm. long, distinctly longer than the disk-corollas. 



Type locality: Mountains of Mexico. 



Distribution: Coahuila and Durango to Jalisco and State of Mexico. 



4. Boebera tagetiflora (Lag.) Spreng. ' Syst. 3: 545. 1826. 



Dyssodia tagetiflora Lag. Gen. & Sp. Nov. 29. 1816. 



Boebera fastigiata H. B. K. Nov. Gen. & Sp. 4: 198. 1820. 



Dysodia appendiculata DC. Prodr. 5: 640, in part. 1836. Not D. appendiculata Lag. 1816. 



A branched perennial, somewhat woody below; stems subterete, somewhat striate, spar- 

 ingly pubescent, branched; leaves 2-5 cm. long, pinnatifid, with linear or linear-oblanceolate 

 toothed segments, sparingly hirsute; lower leaves opposite, the upper alternate; heads termi- 

 nating the branches, peduncled; peduncles 5-10 cm. long, bracteate; involucre turbinate, 

 often purple-tinged, about 8 mm. high and broad; principal bracts about 8, oval, obtuse, thick 

 and round-keeled on the back, sparingly pubescent; accessory bracts about the same number, 

 slightly shorter, linear, acute, round-backed, sparingly pubescent ; ray-flowers 5-8 ; ligules sub- 

 orbicular, 5-6 mm. long; disk-corollas 5 mm. long, puberulent; tube thick, about equaling and 

 scarcely differentiated from the nearly cylindric throat; lobes triangular; achenes 4 mm. 

 long, compressed, 3-4-angled, hirsute; pappus 4 mm. long. 



Type locality: Nova Hispania [Mexico]. 

 Distribution: Central Mexico. 



5. Boebera pinnata (Cav.) Rydberg. 



Aster pinnatus Cav. Ic. 3: 6. 1794. 



Dyssodia pubescens Lag. Gen. & Sp. Nov. 29. 1816. 



Boebera pubescens Spreng. Syst. 3: 544. 1826. 



Rosilla lutea Less. Syn. Comp. 245. 1832. 



Clomenocoma pinnata DC. Prodr. 5: 641. 1836. 



Dyssodia pinnata B. L. Robinson, Proc. Am. Acad. 49: 508. 1913. 



A perennial, somewhat woody at the base; stems much branched with decumbent or 

 ascending branches, angled, strigose, pubescent with crisp hairs; leaves opposite or the upper 

 alternate, sparingly pubescent, pinnatifid into oblanceolate, few-toothed, callous-tipped 

 segments; heads short-peduncled at the ends of the branches; peduncles 3-5 cm. long; 

 involucre hemispheric, somewhat turbinate, 6-7 mm. high, 8-10 mm. broad; principal bracts 

 about 8, oval, rounded at the apex, with 3-5 conspicuous oblong glands; accessory bracts oblong 

 or ®blanceolate, obtuse or rounded at the apex, sparingly pubescent, about two thirds as long 

 as the involucre proper; ray-flowers 6-8; ligules rounded-oval, 6-7 mm. long, orange; disk- 

 corollas 3 mm. long; tube thick, scarcely differentiated from the cylindric throat; lobes 

 triangular; achenes 3 mm. long, 4-angled and somewhat compressed, hirsute; pappus 4 mm. 

 long. 



Type locality: "Nova Hispania" [Mexico]. 



Distribution: Coahuila and Durango to Puebla and Vera Cruz. 



Illustration: Cav. Ic. pi. 212. 



6. Boebera subintegerrima (Lag.) Spreng. Syst. 3: 545. 1826. 



Dyssodia subintegerrima Lag. Gen. & Sp. Nov. 29. 1816. 



Boebera incana Lindl. Bot. Reg. 19: pi. 1602. 1833. 



Dyssodia incana DC. Prodr. 5: 640. 1836. 



Dyssodia integerrima Lag.; Hemsl. Biol. Centr. Am. Bot. 2: 219, as synonym. 1881. 



