. 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 102nd meridian. 30. COMPOSITAE. Vol. III. 4. Parthenium hispidum Raf. Creepingor Hairy Parthenium. Fig. 4435. Parthenium hispidum Raf. New Fl. N. A. 2 : P. repens Eggert, Cat. PI. St. Louis 16. 1891. Similar to the two preceding species, butlower, seldom over 2° high. Rootstocks slen-der, forming runners; stem pilose or hispidwith spreading hairs; leaves hispid on bothsides, irregul
. 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 102nd meridian. 30. COMPOSITAE. Vol. III. 4. Parthenium hispidum Raf. Creepingor Hairy Parthenium. Fig. 4435. Parthenium hispidum Raf. New Fl. N. A. 2 : P. repens Eggert, Cat. PI. St. Louis 16. 1891. Similar to the two preceding species, butlower, seldom over 2° high. Rootstocks slen-der, forming runners; stem pilose or hispidwith spreading hairs; leaves hispid on bothsides, irregularly crenate, sometimes lyrate atthe base, the teeth rounded and obtuse; headsfewer, slightly larger, in a small loose corymb;outer bracts of the involucre proportionatelybroader. Barren rocky soil, Missouri to Kansas and Texas. April-July. 56. CRASSINA Scepin, Sched. Acido Veg. 42. 1758.[Zinnia L. Syst. Ed. 10, 1221. I759-] Annual or perennal herbs, some species shrubby, with opposite, entire, or sparingly ser-rate, mostly narrow and sessile leaves, and large or middle-sized heads of both tubular andradiate flowers. Ray-flowers pistillate, yellow, or variegated, persistent on the achene. Disk-flowers perfect, fertil
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
