Paraphlomis baiwanensis W. Y. Zhao, Y. P. Chen & Q. Fan 2024
- Dataset
- Two new species of Paraphlomis (Lamiales, Lamiaceae) from limestone karsts in Guangdong Province, China
- Rank
- SPECIES
- Published in
- Zhao, Wan-Yi, Xiong, Qin-Dai, Wu, Rang-Min, Zeng, You-Hong, Xie, Zhi-Bin, Chen, Ya-Ping, Fan, Qiang (2024): Two new species of Paraphlomis (Lamiales, Lamiaceae) from limestone karsts in Guangdong Province, China. PhytoKeys 243: 231-248, DOI: 10.3897/phytokeys.243.114415
Classification
- kingdom
- Plantae
- phylum
- Tracheophyta
- class
- Magnoliopsida
- order
- Lamiales
- family
- Lamiaceae
- genus
- Paraphlomis
- species
- Paraphlomis baiwanensis
description
Description. Herbs perennial, 50 – 80 cm tall; stoloniferous, with villous indumentum. Stems erect, stout, unbranched or 2 – 3 branched, 4 - angled, diameter 3.6 – 5.3 mm, with densely retrorse pilose hairs. Leaves opposite; lamina long ovate to lanceolate, leathery, 12.5 – 18.7 cm long, 2.6 – 4.8 cm wide, apex acuminate, base cuneate or abruptly obtuse, margin serrulate; adaxially dark green, with densely pilose, abaxially light green with densely brown glandular, sparsely pilose, more densely on veins; lateral veins 5 – 7 (- 8) - paired, raised abaxially and deeply impressed adaxially, anastomosing at leaf margin; petiole 0.6 – 1.3 cm long, densely pilose. Verticillasters borne in upper leaf axils, cymes (2 -) 5 – 9 - flowered; bracteoles inconspicuous, early deciduous; pedicels ca. 1.2 – 2.0 mm long, densely pilose. Calyx light green, obconical, 5.2 – 5.7 mm long, glabrous inside, outside with densely retrorse pilose, conspicuously 10 - veined; calyx teeth 5, inconspicuous, throat appearing subtruncate, calyx veins extended into wings as 2.5 – 3.0 mm long. Corolla 1.5 – 2.1 cm long, white; tube ca. 7 mm long, ca. 2 mm in diam., straight, inside of throat with pubescent annulate; 2 - lipped, villous outside, upper lip oblong, galeate, apex undulate, ca. 8 – 10 mm long, ca. 3.8 – 5.5 mm wide; lower lip reflexed, ca. 7 mm long, 3 - lobed, medium lobe largest, suborbicular, ca. 6.5 mm long, ca. 6 mm wide, apex emarginate, lateral lobes ovate, ca. 4.5 mm long, ca. 3.2 mm wide, apex obtuse. Stamens 4, inserted above middle and upper of corolla tube, straight, included, filaments flat, 7 – 9 mm long, sparsely puberulent-villous, anther cells 2, ovoid, glabrous. Style filiform, included, glabrous, apex subequally 2 - lobed, ca. 1 cm long. Ovary 4 - loculed, truncate at apex. Nutlets triquetrous-oblong, ca. 3.8 mm long, apex sparsely hispid.
description
Figs 4 C, 5, 6 白湾假糙苏
diagnosis
Diagnosis. Paraphlomis baiwanensis is morphologically similar to P. subcoriacea, but differs from the latter by its stout stem, larger and leathery leaves, and larger flower.
distribution
Distribution, habitat and conservation status. Paraphlomis baiwanensis is currently known to occur only in Baiwan town, Guangdong in one population numbering less than one hundred individuals. It was observed to grow on limestone cliffs at altitudes about 300 m. Its known population was located in Qingxin Baiwan Provincial Nature Reserve of Guangdong which is well-protected. More field investigations are needed to determine its wild distribution. Therefore, the Protection level of Paraphlomis baiwanensis was suggested as Data Deficient (DD) based on the IUCN Red List Criteria (IUCN Standards and Petitions Subcommittee 2022).
etymology
Etymology. The specific epithet “ baiwanensis ” is derived from the type locality of the new species, i. e. Qingxin Baiwan Provincial Nature Reserve of Guangdong, Qingyuan, China.