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141. Chesneya Lindley ex Endlicher, Gen. Pl. 1275. 1840.
雀儿豆属 que er dou shu
Authors: Xiangyun Zhu & Kai Larsen
Spongiocarpella Yakovlev & N. Ulziykhutag.
Plants perennial. Root stout, woody. Stem lignified, short. Leaves imparipinnate, rarely 3-foliolate; stipules herbaceous, adnate to petiole; leaflets entire. Flowers solitary, axillary, rarely 1-4 in a raceme; peduncle with nodes bearing 1 bract. Calyx with 2 bracts at base; tube tubular, gibbous on one side at base, 5-lobed; 2 upper lobes connate, 3 lower lobes free, with brown glands at apex. Corolla yellow or purple; standard suborbicular or oblong, abaxially with dense short appressed hairs, ± longer than wings or keel. Stamens diadelphous; anthers uniform. Ovary sessile; stigma capitate, papillary. Legume oblong to linear, 1-loculed. Seeds reniform. Basic chromosome number x = 8.
About 21 species: C and SW Asia, Mediterranean region; seven species (two endemic) in China.
Chesneya dshungarica Goloskokov (Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 18: 117. 1957) was recorded from Xinjiang by Chang Y. Yang (Claves Pl. Xinjiang. 3: 72. 1985). However, the present authors found no relevant specimens and therefore could not substantiate the occurrence of this species in China.
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| 1 |
Stipules deciduous; plants not cushionlike, with dense whitish appressed hairs; leaflets obovate or obovate-elliptic, apex rounded, emarginate, or truncate; legume 4-6 cm |
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(2) |
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Stipules persistent; plants cushionlike, with spreading whitish appressed hairs or glabrous; leaflets obovate, elliptic, or suborbicular, apex acute or subrounded; legume shorter than 3 cm |
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(4) |
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| 2 (1) |
Racemes 1-4-flowered; mature legume glabrous. |
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1 C. cuneata |
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Flowers solitary; mature legume with dense appressed hairs |
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(3) |
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| 3 (2) |
Leaflets 5-7 × 3-5 mm; pedicels ca. as long as or slightly longer than leaves; legume 35-50 × 4-5 mm. |
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2 C. crassipes |
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Leaflets 7-15 × 4-10 mm; pedicels ca. as long as or shorter than leaves; legume 50-60 × 9-10 mm. |
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3 C. acaulis |
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| 4 (1) |
Persistent stipules not becoming spines, darkened when dry, incurved or straight, leaflets without hard spine at apex |
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(5) |
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Persistent stipules becoming spines; leaflets with hard spine at apex |
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(6) |
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| 5 (4) |
Leaflets 19-41, glabrous, base conspicuously oblique. |
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4 C. polystichoides |
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Leaflets 15-21, both surfaces with dense spreading appressed hairs, base rounded or slightly so. |
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5 C. nubigena |
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| 6 (4) |
Corolla purple; bracteoles linear, ca. 8 mm; leaflets 3 or 4 pairs, both surfaces with whitish silky appressed hairs. |
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6 C. macrantha |
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Corolla yellow; bracteoles subulate, shorter than 1 mm; leaflets 4-6 pairs, with whitish spreading short appressed hairs. |
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7 C. spinosa |
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Lower Taxa
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