日轮果属，越南唇形科黄芩亚科一新属

Heliacria gen. nov. (Scutellarioideae, Lamiaceae) from Coastal Southern Vietnam

摘要:

描述并绘制了越南唇形科一新属及新种：日轮果属(Heliacria Bo Li,C.L.Xiang,T.S.Hoang&Nuraliev)和日轮果(H. maritima Bo Li,C.L.Xiang,T.S.Hoang&Nuraliev)。日轮果属因具攀援藤本习性，花大且花冠为纯白色，花萼近辐射对称、5深裂、裂片长且在果期增大并开展，果实顶端具放射状的瘤状突起等特征而明显区别于黄芩亚科的其他5属。目前，该属仅发现于越南东南部沿海的平定省、富安省、庆和省和宁顺省，常生于海岸边干旱的低地矮林中。

Abstract:

Heliacria Bo Li, C.L. Xiang, T.S. Hoang & Nuraliev and H. maritima Bo Li, C.L. Xiang, T.S. Hoang & Nuraliev, a new genus and a new species of Scutellarioideae (Lamiaceae) endemic to coastal areas of south-central Vietnam, are described and illustrated. Heliacria is distinct from the other five genera of Scutellarioideae by having climbing habit, large flowers with pure white corolla, sub-actinomorphic calyx with five long lobes which are accrescent and spreading in fruits, and nutlets radially tuberculate at apex. The genus is currently only known from four provinces of Vietnam (Binh Dinh, Phu Yen, Khanh Hoa, and Ninh Thuan).