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Key to CalystegiaView taxon page for Calystegia
(For a list of species in Calystegia, use the above link.) Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots. 1. Bracts > 1 mm below calyx, not hiding it, <= 5 mm wide or variously toothed or lobed like leaves 2. Plant glabrous or nearly so 3. Bracts elliptic  In the shape of a flattened circle or ellipse; wider than linear to widely elliptic-oblong, entire  Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.). ..... C. peirsonii (2) 3' Bracts generally linear  Elongate, with nearly parallel sides; narrower than elliptic or oblong. , entire or lobes  1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth. basal  At or near the base of a plant or plant part. Especially said of leaves clustered near the ground or of a placenta confined to the base of an ovary. 4. Stem ± stiffly erect  Upright; vertically oriented. , intertwined; leaf  Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets). linear to narrowly triangular, lobes 0 or ± linear, sinus  Usually pertaining to margins of leaves, sepals, petals, or other parts, an indentation between adjacent lobes or teeth rounded ..... C. longipes 4' Stem trailing to strongly climbing, ± not intertwined; leaf triangular to reniform  Kidney-shaped; often pertaining to a leaf in which the blade base on both sides of the petiole is rounded and concave. , lobes wider than linear, 2(3)-tipped, sinus V-shaped or ± closed ..... C. purpurata 5. Stem strongly climbing, > 1 m; leaf triangular, tip acute  Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle. , sinus V-shaped, bracts rarely lobed ..... subsp. purpurata 5' Stem trailing to weakly climbing, generally < 1 m; leaf ovate-triangular to reniform, tip generally rounded to notched, sinus generally ± closed; bracts generally with small lobes ..... subsp. saxicola 2' Plant puberulent  Minutely hairy. to tomentose  Covered with densely interwoven, generally matted hairs. at least around leaf sinus or at peduncle  Stalk of an individual flower borne singly, not in an inflorescence, or of an entire inflorescence, or the corresponding structure in fruit; the stalk subtending an involucre (e.g., in Asteraceae, Polygonaceae). tip 6' Bracts toothed or lobed like leaves, stalked 7' Leaf ± entire or lobes 2, not linear, not finger-like 8. Leaf blade  Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped. widely triangular to ± reniform, tip acute to acuminate  Having a long-tapered, sharp tip, the sides concave. or notched, lobes generally 2-tipped; hairs ± densely spreading  Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal. ..... C. malacophylla subsp. malacophylla 1' Bracts < 1 mm below calyx, ± hiding it, often > 4 mm wide, not lobed like leaves 10. Plant hairs dense, not appressed  Parallel or nearly parallel to and often in contact with surface of origin; used to describe the disposition of hairs, leaves, pedicels, etc. ..... C. collina subsp. tridactylosa 10' Plant hairs 0 or minutely appressed 11. Leaf blade narrowly triangular, lobes clearly defined, directed ± basally, base with deep sinus ..... C. peirsonii (2) 11' Leaf blade generally triangular-hastate to reniform, lobes not clearly defined, directed ± laterally, base truncate  Abruptly (not gradually) narrower or smaller at base or tip, as if cut straight across or nearly so. to wedge-shaped or widely rounded, occasionally with shallow sinus 13. Stem trailing or weakly to strongly climbing, >= 1 m 14. Plant from rhizomes, stem not woody; peduncle 1-flowered; marshes, riverbanks, or disturbed areas 15' Bracts not strongly sac-like at base, margins not overlapped; corolla 30–58 mm ..... C. sepium 14' Plant from woody caudex  Generally short, sometimes woody, more or less vertical stem of a perennial, at or beneath ground level. , lower stem often woody; peduncle often > 1-flowered; generally dry places ..... C. macrostegia 17. Bracts 16–30 mm wide, strongly keeled to ± sac-like at base 17' Bracts 4–16 mm wide, flat or ± keeled 20' Leaves glabrous to puberulent 13' Stem not or only weakly climbing, < 1 m 22. Plant hairs 0 or sparsely appressed-minute and leaf triangular-hastate to reniform 23. Corolla deep pink or ± purple; leaf reniform, glabrous, ± fleshy; ocean beaches, dunes ..... C. soldanella 23' Corolla white or ± yellow (pink- or purple-tinged); leaf ± reniform or not, glabrous or not, not fleshy; inland 22' Plant tomentose or hairs densely spreading, or leaf not triangular-hastate to reniform 25. Stem well developed, < 100 cm, without basal rosette  A radiating cluster of leaves generally at or near ground level. of leaves 27. Leaf widely triangular to ± reniform, tip generally obtuse to notched, lobes generally 2-tipped; hairs brown or golden-brown (± gray); CaR, SN ..... subsp. malacophylla 27' Leaf ± narrowly triangular, tip generally acute, lobes generally 1-tipped (2nd tip 0 or poorly developed); hairs ± gray (± brown); SnFrB, SCoR, WTR ..... subsp. pedicellata 25' Stem poorly developed, < 30 cm, <= basal rosette of leaves 29' Sepals glabrous or strigose  With stiff, straight, sharp, appressed hairs. at center
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