. 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. i. Thymophylla aurea (A. Gray) Greene. Thyme-leaf. Fig. 4550. Lowellia aurea A. Gray, Mem. Am. Acad. (II) 4: 91. 1849. Hymena'herum aureum A. Gray, Proc. Am. Acad. 19: 42. 1883. T. aurea Greene; Britt. & Brown, 111. Fl. 3: 453. 1898. Annual, glabrous, 4'-i2' high, much branched; the leaves and involucre with large oval oil-glands. Leaves alternate, or the l
. 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. i. Thymophylla aurea (A. Gray) Greene. Thyme-leaf. Fig. 4550. Lowellia aurea A. Gray, Mem. Am. Acad. (II) 4: 91. 1849. Hymena'herum aureum A. Gray, Proc. Am. Acad. 19: 42. 1883. T. aurea Greene; Britt. & Brown, 111. Fl. 3: 453. 1898. Annual, glabrous, 4'-i2' high, much branched; the leaves and involucre with large oval oil-glands. Leaves alternate, or the lower opposite, sessile or nearly so, very deeply parted into 5-9 linear-filiform, mostly entire, blunt segments; heads numerous, corymbose, 6"-io" broad, terminating the branches; involucre about 3" high, its bracts acute; rays about 12, 2i"-3" long; pappus of 6-8 erose truncate scales, somewhat longer than the thickness of the achene. Kansas and Colorado to Texas and New Mexico. June-Sept. 88. PECTIS L. Syst. Nat. Ed. 10, 1221. 1759- Annual or perennial, diffuse prostrate or erect, mostly glabrous herbs, gland-dotted and strong-scented, with opposite narrow sometimes ciliate leaves, and small usually cymose heads of both tubular and radiate yellow flowers. Involucre cylindric, oblong or campanu- late, its bracts in 1 series, narrow, keeled, distinct. Receptacle small, naked. Ray-flowers pistillate, the rays small, entire or 3-lobed. Disk-flowers perfect, their corollas with expanded, somewhat irregularly 5-cleft limbs. Anthers entire at the base. Style-branches of the disk- flowers very short, obtuse. Achenes linear, slightly angled, striate. Pappus of several or numerous scales, slender bristles or awns, sometimes with a few outer smaller additional ones. [Latin, pecten, comb, referring to the pappus.] About 75 species, natives of the warmer parts of America. Besides the following, about 10 others occur in the southern and western parts of the United
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
