دورية أكاديمية
Lasianthus ranongensis (Rubiaceae), a new species from Andaman tropical rainforest Thailand
| العنوان: | Lasianthus ranongensis (Rubiaceae), a new species from Andaman tropical rainforest Thailand |
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| المؤلفون: | Tiwtawat Napiroon, Aroon Sinbumroong, Manop Poopath |
| المصدر: | PeerJ, Vol 9, p e12320 (2021) |
| بيانات النشر: | PeerJ Inc., 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Medicine LCC:Biology (General) |
| مصطلحات موضوعية: | Lasiantheae, Rubiaceae, Morphology, Botany, Tropical rainforests, Medicine, Biology (General), QH301-705.5 |
| الوصف: | We describe Lasianthus ranongensis Sinbumr. & Napiroon as a new species in the genus Lasianthus. The new taxon is intensively discussed through taxonomic affinities and information on its habitat, distribution and conservation status is provided. Moreover, line drawings and stereo microscope images of important fertile organs are demonstrated. The new species is morphologically similar to L. stipularis but differs in its having flattened branches (vs. terete), leaf blade elliptic-oblong shape of 15.0–20.0 × 4.0–6.0 cm (vs. oblanceolate-oblong 12.0–16.0 × 3.0–5.5 cm), 9–12 pairs of veins (vs. 9–10 pairs), stipule 5–7 mm long, half covering cymes (vs. 10–12.5 mm long, entirely covering cymes), four or five bracts narrowly lanceolate, 2.5–3.0 mm long (vs. bracts numerous, broadly triangular, 10–15 mm), flowers with cupular calyx (vs. with campanulate calyx), corolla villous on internal surface, and six or seven lobed (vs. pubescent on internal surface and four lobed) and drupes with five pyrenes (vs. with four pyrenes). It is also similar to L. pseudo-stipularis, but from which it is obviously distinguished by its stipule half covers cymes, secondary veins have 9–12 pairs of secondary veins, cupular calyx shape, six or seven lobed corolla, and drupe with five pyrenes, whereas L. pseudo-stipularis has stipule entirely covering cymes, 7–8 pairs of secondary veins, obconic calyx, four lobed corolla, and drupe with four pyrenes. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2167-8359 |
| Relation: | https://peerj.com/articles/12320.pdf; https://peerj.com/articles/12320/; https://doaj.org/toc/2167-8359 |
| DOI: | 10.7717/peerj.12320 |
| URL الوصول: | https://doaj.org/article/153272d2ce304d039e929c4d945c8c08 |
| رقم الأكسشن: | edsdoj.153272d2ce304d039e929c4d945c8c08 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 21678359 |
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| DOI: | 10.7717/peerj.12320 |