白蟲豆
白蟲豆 |
中文學名:白蟲豆 拉丁學名:Cajanus niveus (Benth.) van der Maesen 界:植物界 科:豆科 屬:木豆屬 河谷。緬甸有分布。 科拉丁名:Leguminosae 屬拉丁名:Cajanus |
白蟲豆(bái chóng dòu,學名:Cajanus niveus (Benth.) van der Maesen),直立小灌木。產雲南南部元江河谷。常生於海拔450-1 200米石山陽坡上。緬甸有分布。 (概述圖來自:中國自然標本館 ) [1]
目錄
白蟲豆形態特徵
白蟲豆, 直立小灌木,高約1米。莖有縱紋,全株密被灰色至灰白色短絨毛。
葉具羽狀3小葉;葉柄長1.5-3厘米;托葉小,早落;小葉革質,下面有腺狀斑點,頂生小葉倒卵形,長2.5-3.8厘米,上面略被灰色短絨毛,下面密被灰白色短絨毛;基出脈3條,側脈每邊3-5條,兩面略明顯;小托葉缺;
小葉柄長2-5毫米,密被灰白色短絨毛,側生小葉稍小,斜橢圓形,兩端斜圓形,干後上面帶黑色,下面灰白色。
總狀花序腋生,少花。莢果倒卵狀橢圓形,扁平,長3-4.5厘米,中部以上逐步擴大,近頂端最寬處約1.5厘米,先端具彎喙,果瓣於種子間具明顯橫縊線,密被灰白色貼伏短絨毛;
種子4-8顆,橢圓形,長約5毫米,寬約4毫米,有淡褐色斑點,先端圓形,基部有肥厚的種阜。果期8月。[2]
Cajanus niveus (Benth.) van der Maesen in Agr. Univ. Wageningen papers 85-4: 157. 1986.——Cajanus niveus Grah. ex Wall. nom. mud. 1831.——Atylosia nivea Benth. in Miq. Pl. Jungh. 1: 243. 1852; Baker in Hook. f. Fl. Brit. Ind. 2:214 1876.——Cantharospermum niveum (Benth.)Raiz. in Mooney, Suppl. Bot. Bihar & Orissa 53. 1950.
Atylosia nivea Wallich ex Bentham in Miquel, Pl. Jungh. 243. 1852; Cantharospermum niveum (Wallich ex Bentham) Raizada.
Subshrubs, erect, ca. 1 m tall. Stems pubescent. Leaves pinnately 3-foliolate; stipules small, deciduous; petiole 1.5-3 cm, densely tomentose; stipels absent; petiolules 2-5 mm, densely tomentose; leaflets leathery, with glandular spot below; terminal leaflet obovate, 2.5-3.8 cm, adaxial surface pubescent, basal veins 3, lateral veins 3-5 on each side, slightly obvious on both surfaces; lateral leaflets slightly smaller, obliquely elliptic, with black spot after drying adaxially, with fine downy hairs on abaxial surface. Raceme axillary, 3-6 cm, with a few flowers; peduncle 0.6-1.2 cm; bracts ovate. Calyx campanulate; lobes triangular, shorter than tube. Corolla yellow, 4-5 × as long as calyx; standard obovate, base auriculate; wings auriculate; keels with auricles, apex slightly inflexed. Ovary densely hairy. Leg-ume obovate-elliptic, compressed, 3-4.5 cm, to 1.5 cm wide near top, densely pubescent, legume valve with obvious trans-verse constriction between seeds, apex with curved beak. Seeds 4-8, with light gray spot, ellipsoidal, ca. 5 × 4 mm, apex rounded; strophiole succulent at base. Fl. and fr. Aug-Oct.
白蟲豆生長環境
常生長於海拔450-1 200米石山陽坡上。
白蟲豆分布範圍
參考來源
- ↑ 白蟲豆, 植物智, 2020-01-18
- ↑ 《中國植物志》 第41卷 (1995) >> 301頁 PDF >> 白蟲豆 Cajanus niveus
- ↑ 白蟲豆 Cajanus niveus - 植物標本館(KUN)官方網站 2015年8月7日 - 白蟲豆Cajanus niveus 編輯Cajanus niveus (Wall. ex Benth.) Maesen in Agricultural University Wageningen Papers 85(4): 157. 1986[1985].種間區...