. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 3. Agoseris cuspidata (Pursh) D. Dietr. Prairie False Dandelion. Fig. 4083. Troximon cuspidatum Pursh, Fl. Am. Sept. 742. 1814. Troximon marginatum Nutt. Gen. 2: 128. 1818. Agoseris cuspidata D. Dietr. Syn. PI. 4: 1332. 1847. Nothocalais cuspidata Greene, Bull. Cal. Acad. (II.) 2:55. 1886. Leaves linear, long-acuminate, thick, pubescent or glabrate, 4'-8' long,
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 3. Agoseris cuspidata (Pursh) D. Dietr. Prairie False Dandelion. Fig. 4083. Troximon cuspidatum Pursh, Fl. Am. Sept. 742. 1814. Troximon marginatum Nutt. Gen. 2: 128. 1818. Agoseris cuspidata D. Dietr. Syn. PI. 4: 1332. 1847. Nothocalais cuspidata Greene, Bull. Cal. Acad. (II.) 2:55. 1886. Leaves linear, long-acuminate, thick, pubescent or glabrate, 4'-8' long, 2"-s" wide, somewhat con- duplicate, their margins conspicuously white-to- mentose and crisped, or entire. Scape stout, to- mentose, at least above, shorter than or equalling the leaves; head i'-a' broad; involucre usually quite glabrous, nearly 1' high; achenes slightly contracted at the summit; about 3" long, beakless; pappus of 40-50 unequal bristles. In dry soil, on prairies and rocky hills, Illinois to North Dakota, Nebraska, Kansas and Colorado. Called also false dandelion. April-June. 20. SITILIAS Raf. New Fl. N. A. 4: 85. 1836. [Pymhopappus DC. Prodr. 7: 144. 1838.] Annual or perennial herbs, with alternate or basal leaves, and mostly large, solitary or few heads of yellow flowers, borne on long, usually bracted peduncles. Involucre oblong or cam- panulate, its principal bracts in 1 series, nearly equal, slightly united at the base, with several series of smaller outer ones. Rays truncate and 5-toothed at the summit. Anthers sagittate at the base. Style-branches short, obtusish. Achenes oblong or fusiform, mostly 5-ribbed, roughened or hirsute, abruptly narrowed into a long filiform beak. Pappus of numerous soft simple brownish somewhat unequal bristles, surrounded at the base by a villous white ring. [Name unexplained.] Six known species, natives of North America and Mexico. Besides the following, 3 others occur in the southwestern United States. Type s
Size: 1407px × 1777px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
