. 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. 29S CYPERACEAE. Vol. I. C. Torreyi. C. ovularis. Spikelets i}4"-2" long, the lower spreading. 32, Heads globose. 33, Achene oblong or obovoid, about twice as long as thick. Rachis wingless or very narrowly winged. Heads globose. 34. C. filiculmis. Heads oblong. 35. C. cayennensis. Rachis-wings membranous, broad. Scales firm, not appressed ; spikelets
. 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. 29S CYPERACEAE. Vol. I. C. Torreyi. C. ovularis. Spikelets i}4"-2" long, the lower spreading. 32, Heads globose. 33, Achene oblong or obovoid, about twice as long as thick. Rachis wingless or very narrowly winged. Heads globose. 34. C. filiculmis. Heads oblong. 35. C. cayennensis. Rachis-wings membranous, broad. Scales firm, not appressed ; spikelets loosely capitate. 36. C. Grayi. Scales thin, closely appressed; spikelets densely capitate. 37. C. globulosus. i. Cyperus flavescens L. Yellow Cyperus. Galingale. Fig. 721. Cyperus flavescens L. Sp. PI. 46. 1753. Annual, culms very slender, tufted, leafy below, 3'-i2' tall, mostly longer than the leaves. Leaves i"-ij" wide, smooth, the longer usually exceeding the inflorescence; clusters terminal and sessile or on 1-4 short rays; spikelets in 3's-6's, linear, subacute, yellow, many-flowered, flat, 4"-9" long, 1 $"-2" broad; scales ovate, obtuse, i-nerved, appressed, twice as long as the orbicular-ovate black obtuse lenticular shining achene; stamens 3; style deeply 2-cleft, its branches slightly exserted; superficial cells of the achene ob- long. In marshy ground, New York to Michigan, Florida, Mexico and Costa Rica. Also in the Old World, in Ber- muda, Cuba and Dominica. Reported from Maine. 2. Cyperus diandrus Torr. Low Cyperus. Fig. 722. Cyperus diandrus Torr. Cat. PI. N. Y. 90. 1819. Cyperus diandrus elongatus Britton, Bull. Torr. Club 19: 226. 1892. Annual, culms tufted, slender, 2'-!$' tall. Leaves about 1" wide, those of the involucre usually 3, the longer much exceeding the spikelets; clusters sessile and terminal, or at the ends of 1-3 rays; spikelets 4"-o" long, linear-oblong, acute, flat, many-flowered; scales ov
Size: 1426px × 1752px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
