A new species and a synopsis of the Hedyotis-Oldenlandia group (Rubiaceae: Spermacoceae) in Andaman & Nicobar Islands, India

IF 0.6 4区生物学 Q4 PLANT SCIENCES

Blumea Pub Date : 2019-12-19 DOI:10.3767/blumea.2019.64.03.04

M. Nandikar, K. Kishor

引用次数: 0

Abstract

An identification key to all the reported species of Hedyotis-Oldenlandia group (Hedyotis, Oldenlandia, Exallage, Leptopetalum, Scleromitrion and Debia) in Andaman & Nicobar Islands is presented with one new species, Oldenlandia smita-crishnae, described from Saddle Peak forests of North Andaman, India. It shares some characters with Oldenlandia herbacea, O. corymbosa and O. pseudocorymbosa. However, it is remarkable for its abaxially puberulous leaves, divaricate stipules, ellipsoid to obovoid hypanthium, pink-striped corolla lobes and 20–30-seeded, inserted capsule. Furthermore, a new combination in Exallage is proposed and lectotypes for Spermacoce cristata, S. costata, Hedyotis vestita and Oldenlandia stocksii are designated.

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标题印度安达曼和尼科巴群岛蛇舌属一新种及记述(Rubiaceae:精子科)

本文提出了安达曼和尼科巴群岛所有已报道的Hedyotis-Oldenlandia类群(Hedyotis, Oldenlandia, Exallage, Leptopetalum, Scleromitrion和Debia)的鉴定关键，其中一个新种Oldenlandia smita-crishnae来自印度北安达曼鞍峰森林。它与苍草、山药和假山药有一些共同的特征。然而，值得注意的是其背面被微柔毛的叶，分散的托叶，椭圆形到倒卵形托杯，粉红色条纹的花冠裂片和20 - 30种子，着生的蒴果。此外，我们还提出了一种新的组合，并指定了一种新的选择类型，即卵黄精(Spermacoce cristata)、棘棘(S. costata)、花斑蛇(Hedyotis vestita)和古榄(Oldenlandia stocksii)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Blumea 生物-植物科学

CiteScore

1.90

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： An international electronic-only journal on the biodiversity, evolution and biogeography of plants (systematics, floristics, phylogeny, morphology, anatomy). For floristic studies, the focus is on tropical Africa south of the Sahara; tropical Southeast Asia with a strong emphasis on Malesia; South America with emphasis on the Guianas. The language is English.