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Five new species of Elatostema (Urticaceae) from China
Author(s) -
WANG WenTsai
Publication year - 2012
Publication title -
journal of systematics and evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.249
H-Index - 46
eISSN - 1759-6831
pISSN - 1674-4918
DOI - 10.1111/j.1759-6831.2012.00229_2.x
Subject(s) - urticaceae , combinatorics , botany , mathematics , biology
Callicarpa hainanensis Z. H. Ma & D. X. Zhang, sp. nov. (S1-5. Fig. 1, S1-8. Fig. 4) Type: China. Hainan: Jianfengling Mountain, at the edge of a secondary forest, alt. 650 m, 2010-05-26, Z. H. Ma 079 (holotype, IBSC; isotypes, IBSC). Latin diagnosis: Haec species Callicarpa lingii Merr. similis, sed foliis obovato-lanceolatis, lobis calycis triangulatis, corollis albis, fructibus globosis differt. Morphological description: Shrubs, ca. 1.5–2.0 m tall. Branchlets terete, with small linear lenticels, sparsely stellate pubescent when young, becoming grayish brown and glabrous later. Leaves subsessile; obovate-lanceolate 15–20 × 3–5 cm, subcoriaceous, apex acuminate, base subcordate or auriculate-semiamplexicaul, margin serrulate along apical part; leaf blade glabrous, slightly yellow glandular on the upper surface, sparsely grayish stellate pubescent on midveins, densely small yellow glandular on the lower surface; secondary veins 11–13 pairs. Cymes slender, ca. 3 cm across, 3–4-branched, yellowish brown stellate pubescent, peduncle 3–5 mm long, purple, bracts linear-lanceolate, 2–3 mm long; pedicels glabrous, ca. 2 mm long. Flowers 15–20 per cyme; calyx long-cup-shaped or subtubular, ca. 4.5 mm long, calyx 4-lobed, lobes sharply triangular, ca. 2 mm, tube sparsely stellate pubescent, yellow glandular, dehisced as fruits mature; corolla white, ca. 5 mm long, glabrous, densely small yellow glandular; stamens 4; filaments slightly shorter than corolla; anthers ca. 2 mm, oblong, opening by an apical pore; style longer than stamens by 2 mm; ovary globose, glabrous but densely yellow glandular, 2-locular; ovules 2 per locule. Fruit globular, ca. 4 mm in diameter, glabrous, yellow glandular. Flowering and fruiting from May to November. Distribution and conservation status: Callicarpa hainanensis is extremely rare with only a few populations found at the edge of a secondary forest at an altitude of ca. 650 m, growing together with Polygonum chinense L., Rubus lambertianus Ser., Ficus