宁夏枸杞属（茄科）一新种和一新变种

描述了宁夏茄科枸杞属一新种小叶黄果枸杞和一新变种密枝枸杞。小叶黄果枸杞与宁夏枸杞相接近,但前者枝条成"之"字形曲折,叶片较小,条形、条状披针形、条状倒披针形或狭椭圆形,花1～2朵与叶一起簇生于短枝顶端,花萼杯状或筒状,常2浅裂,裂片边缘无毛;花冠筒部与冠檐近等长,雄蕊着生于花冠筒的喉部,花丝连同花冠无毛或在基部仅被稀疏短柔毛,浆果扁球形或椭圆球形,常为淡黄色,近透明,长6～10mm,直径6～8mm,种子5～8枚而与后者明显不同。在外部形态上,小叶黄果枸杞与新疆枸杞和土库曼枸杞也比较接近,但新疆枸杞和土库曼枸杞的枝条不成"之"字形曲折,花常2～3朵或更多与叶一起簇生于短枝顶端,花冠筒部长约为檐部裂片长的2倍,雄蕊着生于花冠筒的近中部,浆果红色。尤其是土库曼枸杞的花萼为宽钟形,常4～5裂,花冠裂片边缘有短而稀疏的缘毛而明显有异于小叶黄果枸杞。宁夏枸杞的变种密枝枸杞与原变种的区别在于前者植株分枝多而密,叶片小,狭长椭圆形、倒披针形或匙形,长1～1.8cm,宽1.5～2.5mm;雄蕊着生于花冠喉部,长短不等,其中两枚较短,其余3枚较长,花丝连同花冠无毛或在基部仅被稀疏短柔毛;浆果卵球形或椭圆形,长5～8mm,直径3～6mm,淡紫色,近透明,多汁,味甜,种子2～4粒。

A new species and a new variety of Lycium (Solanaceae) from Ningxia, China

A new species of the genus Lycium L.,L.parvifolium and a new variety L.barbarum var.implicatum were described from Zhongning,Ningxia Province,western China.L.parvifolium was closely related to L.barbarum but differs from the latter by the branches zigzag,leaves comparatively small,1-2.5(-3) cm long,1.5-2(-3) mm wide,flowers 1-2,fasciculate on short-branches with leaves,calyx cupular or tubular,stamens inserted at the throat of corolla tube,filaments along with corolla glabrous or sparsely pubescent;berry usually pale yellow,nearly translucent,compressed-globose or ellipsoidal,6-10 mm×6-8 mm,seeds 5-8.L.parvifolium was also closed to L.dasystemum and L.turcomanicum,but in the latter two species,the branches not zigzag,flowers usually 2-3 or more fasciculate on short-branches with leaves,corolla tube about 2 times as long as limb and lobes,stamens inserted at the nearly middle of corolla tube,berry usually red.Especially,in L.turcomanicum,calyx widely bell-shaped,usually 4-5-lobed,corolla lobes sparsely ciliate at margin.L.barbarum var.implicatum differed from L.barbarum by the branches many and densely arranged,leaves comparatively small,1-1.8 cm long,1.5-2.5 mm wide;stamens inserted at the throat of corolla tube,unequal in length,two of them shorter,the others longer,berry pale purple,nearly transparent,ovoid or elliptical,5-8 mm long,3-6 mm in diam.,sweet,seeds 2-4.