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15. Agriophyllum Marschall von Bieberstein, Fl. Taur.-Caucas. 3: 6. 1819.
沙蓬属 sha peng shu
Herbs annual. Stem erect, branched from base, covered with ramified hairs, becoming glabrous. Leaves alternate, sessile or petiolate; leaf blade flattened, linear to lanceolate or ovate, base attenuate or rounded-cuneate, margin entire, apex mucronate; veins 3 to numerous. Inflorescence a bracteate spike; bracts imbricate, base broad, apex aristate, reflexed; bractlets absent. Flowers solitary in bract axils, sessile, bisexual. Perianth segments 1-5, free, white, oblong or lanceolate, membranous, apex erose. Stamens 1-5; filaments flattened, united only at base; anthers oblong. Ovary sessile, ovoid, compressed; style short; stigmas 2, filiform. Utricle cylindric to subglobose, sometimes with lateral wings, apex with a 2-fid beak; pericarp free from testa. Seed vertical, globose or ellipsoid, compressed; embryo annular; radicle inferior; perisperm copious.
Five or six species: C and SW Asia; three species in China.
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| 1 |
Utricle beak parted into 2 slightly recurved, linear, compressed beaks, each usually with a subapical, small, flattened tooth. |
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1 A. squarrosum |
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Utricle beak above middle divided into 2 small, acicular beaks, each with a proximal, lateral, recurved or inflexed, firm, spinelike, glabrous process. |
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(2) |
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| 2 (1) |
Utricle not wing-margined distally. |
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2 A. lateriflorum |
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Utricle distinctly irregularly wing-margined apically. |
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3 A. minus |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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