亚洲热带地区的山茶科新种

本文报导了收藏于美国国家自然博物馆史密逊研究院,哈佛大学阿诺树木园及密苏里植物的标本室的山茶科新种,计山茶属7个新种,石笔木属3个新种,它们分布于菲律宾的吕宋、加里曼丹、印度支那和泰国,还有中国台湾。山茶属和石笔木属原来是东亚亚热带所特有,过去个别的种分布到热带亚洲,本文所报导的新植物,不仅扩大了山茶科在亚洲热带的分布区,同时也论证了上述各地在地史上曾经是华夏古陆的一部份。在地史上,三迭纪末由于印支造山运动把印支半岛、马来半岛、苏门答腊及加里曼丹联结在华夏古陆,古植物化石曾有过华夏植物的纪录。现在山茶属及石笔木属在上述各地的发现,是从现代植物得到佐证,特别是吕宋和多明拉分布有山茶属和石笔木属,很有指示意义。

New Species of Theaceae from Tropical Asia

The new species and combinations reported on this paper are deposited in theherbaria of Smithsonian Institution, Arnold Arboretum of Harvard Universityand the Missouri Botanical Garden. This report has enriched the knowledge aboutthe tropical Theaceous flora. Since the genera Camellia and Tutcheria are EastAsian subtropical endemics, nearly all the species are restricted along the line ofTropic of Cancer. So far as we known, only one or two species were reportedfrom the tropic. The new Comellia and Tutcheria found on Kalimantan, Luzon andMindora would once more indicated that the Islands in ancient time were belong-ed to the Cathaysian landmass. Geologically, at the end of Triassic Period, theIndo-China mountain movement appeared at the south Cathaysia ancient land,and combined Indo-China and Malay Peninculas, Sumatra and Kalim antan togatherwith the Cathaysia, which had proved by Mesozoic fossils.