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2-cleft 2-lipped 5-lobed achenes acute or acuminate acutish Annual anthers apex appressed ascending Aster axillary axils Basal leaves base bracts branched Britton broad calyx calyx-lobes campanulate canescent capsule ciliate clusters cordate corolla corolla-tube corymbed corymbose cymes densely dentate disk-flowers dry soil entire erect filiform Florida flowers fruit glabrous Gray green heads herbs hirsute hispid imbricated involucre July-Sept Kansas lanceolate leafy Leaves lanceolate Leaves linear Leaves oblong Leaves ovate linear-lanceolate linear-oblong lobes margins Michx narrowed narrowly nearly Nebraska numerous nutlets Nutt oblong oblong-lanceolate obovate obtuse obtusish Ontario outer oval Ovary ovate-lanceolate ovoid paniculate pappus pedicels peduncles Perennial petioles pinnately pinnatifid pistillate puberulent pubescent purple racemes rays Receptacle serrate sessile short short-petioled shorter slightly Solidago solitary sometimes sparingly spatulate spikes spreading Stamens stem leaves stem slender stolons stout subulate terminal Texas Torr tube tubular Type species upper lip usually waste places wide yellow
Page ii - Corolla gamopetalous, funnelform, campanulate, club-shaped or rotate, often marcescent, 4-12-lobed or -parted, the lobes convolute or imbricated in the bud. Stamens as many as the lobes of the corolla, alternate with them, inserted on the tube or throat ; anthers 2-celled, longitudinally dehiscent; filaments filiform, or dilated at the base.
Page 149 - Cal. 7. L. europaeus L. In waste places: NY to Va. Naturalized from Europe. Locally rare as a weed. 30. Mentha [Tourn.] L. Whorls of flowers in terminal spikes, or some in the upper axils. Plants glabrous or very nearly so. Spikes slim, narrow, mostly interrupted; leaves sessile, or nearly so. Spikes thick, mostly dense, at first short; leaves petioled. Leaves lanceolate or oblong, acute. Leaves ovate, obtuse, or the upper acute, subcordate. Plants villous, hirsute or canescent, at least at the nodes....
Page 172 - Calyx inferior, persistent, 4-5-toothed, -cleft, or -divided, or sometimes split on the lower side, or on both sides, the lobes or segments valvate, imbricate or distinct in the bud. Corolla gamopetalous, the limb 2-lipped, or nearly regular. Stamens 2, 4 or 5, didynamous, or nearly equal, inserted on the corolla and alternate with its lobes; anthers 2-celled; the sacs equal, or unequal, or sometimes confluent into one. Disk present or obsolete. Pistil 1, entire or 2-lobed; ovary...
Page 178 - Light canary yellow and orange, i in. long or over, irregular, borne in terminal, leafy-bracted spikes. Corolla spurred at the base, 2-lipped, the upper lip erect, 2-lobed ; the lower lip spreading, 3-lobed, its base an orange-colored palate closing the throat ; 4 stamens in pairs within ; 1 pistil. Stem: i to 3 ft.
Page 94 - Ovary 4-celled; ovule l in each cavity; style usually short, 2-lobed at the summit, one of the lobes stigmatic. Fruit dry, mostly enclosed by the calyx, at length separating into 4, 1-seeded linear or linear-oblong crustaceous smooth papillose or rugose nutlets.
Page 253 - Stamens as many as the lobes of the corolla and attached to its throat, the anthers protruding from the flower.
Page 286 - Corolla epigynous, the limb 2-5-lobed. Stamens 2-4, inserted on the tube of the corolla and alternate with its lobes; filaments distinct ; anthers versatile.
Page 344 - L. and 5. sylvaticus L. are all sometimes adventive. 51. Arnica L. i. A. acaulis (Walt.) BSP In low woods: Del. and southern Pa. Known only from near Barnsley, Chester Co., Pa., in our area. TRIBE 9. CYNAREAE Achenes inserted on the receptacle by their bases, not oblique. Receptacle densely bristly. Filaments separate. Involucral bracts hooked at the tip; leaves not bristly.
Page 100 - Corolla 2-lipped or regular; upper lip when present mostly flat, scarcely concave. Flowers in axillary whorls or clusters or these forming terminal spikes. Corolla 2-lipped. Stamens curved, often converging. Anther-bearing stamens 2.
Page 332 - Delaware counties. 9. L. Canbyi A. Gray. In swamps: NJ to S. Car. Frequent throughout the pine-barrens of New Jersey; unknown elsewhere. AMBROSIACEAE Staminate and pistillate flowers in the same heads; involucre of a few rounded bracts. I. IVA. Staminate and pistillate flowers in separate heads, the staminate mostly uppermost; involucre of the pistillate heads bur-like or nut-like. Involucral bracts of the staminate heads united. 2. AMBROSIA. Involucral bracts of the staminate heads separate; involucre...