中国天门冬科一新记录种——紫花蜘蛛抱蛋

A newly recorded species of Aspidistra(Asparagaceae)from China: Aspidistra xuansonensis var. violiflora

关键词:  紫花蜘蛛抱蛋, 喀斯特, 新记录, 云南, 中越边境地区

Key words:  Aspidistra xuansonensis var. violiflora, karst, new record, Yunnan, Sino-Vietnamese border areas

摘要:

该文首次报道中国天门冬科蜘蛛抱蛋属一新记录种——紫花蜘蛛抱蛋(Aspidistra xuansonensis var. violiflora N. Vislobokov),其与石山蜘蛛抱蛋(A. saxicola Y. Wan)相似,但前者的雄蕊生于花被筒下部,柱头形状多变,上表面白色,边缘不规则波状可与后者区别。此前报道该变种及其原变种春山蜘蛛抱蛋(A. xuansonensis var. xuansonensis N. Vislobokov)均仅产于越南富寿省春山国家公园(Phu Tho Province, Xuan Son National Park),本次报道的紫花蜘蛛抱蛋被发现于中国云南省河口瑶族自治县喀斯特地区。该发现丰富了中国蜘蛛抱蛋属植物多样性,对研究中越边境地区蜘蛛抱蛋属植物具有一定的生物地理学意义,也为该属的园林园艺开发提供了潜在资源。文中还提供了相关的形态学描述、孢粉信息和彩色解剖图版以利辨识,并对蜘蛛抱蛋属的花色变化进行了探讨。

Abstract:

Aspidistra xuansonensis var. violiflora is reported here as a newly recorded taxa for the first time in China from the karst region of Yunnan Province. It is similar to A. saxicola Y. Wan, but differs by its stamens are inserted at the lower part of perigone tube, the stigma surface white, irregular wavy at margin. A. xuansonensis var. violiflora and A. xuansonensis var. xuansonensis were previously known only from the Xuan Son National Park, Phu Tho Province, Vietnam. Recently, we found A. xuansonensis var. violiflora in Hekou Yao Autonomous County, Yunnan Province, China, collected specimens and introduced plants. The new discovery enriches the diversity for the genus Aspidistra in China, which has some biogeographical significance for the study of Aspidistra in Sino-Vietnamese border areas, and also provides potential resources for the development of this genus in landscaping and horticulture. Detailed characteristic descriptions, pollen morphology and color plates are provided for identification, and the changes in flower color of the genus Aspidistra were discussed.