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Tên Khoa học: Callicarpa bachmaensis Soejima & Tagane
Tên tiếng Anh:
Tên tiếng Việt: Tử châu bạch mã
Tên khác:

MÔ TẢ CHUNG

Liana-like small tree, ca. 3 m tall. Branches sweeping with gradual curve and overhanging distally. Twigs with a dense indumentum of short plumose or dendroid brown hairs, slightly 4-angular when young, later becoming terete, woody and glabrous, lenticellate; internode 8.7–13 cm long in main stems, 1.4–3 cm long in axial ones. Leaves opposite, occasionally subequal; blades narrowly elliptic to narrowly lanceolate, (2.6–)5–8 × (0.4–)0.8–2 cm in larger leaves, 1.1–4 × 0.2–1 cm in smaller ones, base acute to cuneate, apex acuminate, margin entire, upper surface with short stellate hairs or sometimes almost glabrous, also with small yellow sessile glands and a few larger sessile glands, lower surface densely covered with white stellate or sometimes pale brownish fringed peltate scale-like hairs and a few larger sessile glands, chartaceous to subcoriaceus, green and slightly lustrous above, white hairy below; midrib slightly sunken above, prominent below, secondary veins 6–10 pairs, prominent below, tertiary veins scalariforming-reticulate; petioles 0.8–1.1 cm long, with indumentum as branches. Inflorescence axillary, cymose, entirely covered with indumentum as branches, peduncles 0.8–1 cm long; bracts linear, 1.5–2 mm long; pedicels ca. 0.5 mm long. Calyx cup-shaped, 1–1.5 mm long with 4 (or 5) shallow lobes, outer surface covered with stellate or short dendroid hairs and small yellow sessile glands, inner surface almost glabrous. Corolla white, 2–2.2 mm long, divided into four lobes, tube ca. 1 mm long, lobes oblong-ovate, <1 mm long, apex rounded, outer surface with yellow sessile glands, inner surface almost glabrous. Stamens 4, ca. 1 mm long exerted from corolla, filaments 2.5–3 mm long, glabrous, anthers elliptic, ca. 1 mm long, with many yellow sessile glands near connectives, dehiscing through longitudinal slits. Stigma capitate, style ca. 6 mm long, glabrous. Fruits drupaceous, spherical, 2.5–3 mm in diameter, dark purple, sparsely covered with stellate hairs.

Distribution and habitat

VIETNAM: Northeast (Lao Cai and Vinh Phuc Province) and Central coast (Thua Thien Hue, Quang Nam and Da Nang Province) (Fig. 3). In the type locality, Bach Ma National Park, Thua Thien Hue Province, a small population was found at the edge of humid broad-leaved evergreen forest along a stream, at altitude ca. 400 m, in which Dipterocarpus hasseltii Blume (Dipterocarpaceae), Croton argyratus Blume (Euphorbiaceae), Vitex axillariflora (Merr.) Bramley (Lamiaceae), Beilschmiedia henghsienensis S. K. Lee & Y. T. Wei (Lauraceae), Litsea balansae Lecomte (Lauraceae), Heritiera augustata Pierre (Malvaceae), Syzygium diospyrifolium (Wall. ex Duthie) S. N. Mitra (Myrtaceae), S. siamense (Craib) Chantar. & J. Parn. (Myrtaceae), Adina pilulifera (Lam.) Franch. ex Drake (Rubiaceae) dominate.

Conservation status

Data Deficient (DD). Callicarpa bachmaensis is collected from north and central Vietnam. In the type locality, Bach Ma National Park, the number of individuals is likely stable, but at present we have no reliable information on its abundance and range. Further investigations are needed to accurately assess its status in the natural habitat.

Ref: PhytoKeys 62: 33-39 (25 Mar 2016)

ẢNH

Callicarpa bachmaensis -1-Soejima.jpg at www.BotanyVN.com

Ảnh 1. Callicarpa bachmaensis -1-Soejima.jpg

 

Callicarpa bachmaensis -2-Soejima.jpg at www.BotanyVN.com

Ảnh 2. Callicarpa bachmaensis -2-Soejima.jpg

 

PHÂN LOẠI KHOA HỌC
Giới: Thực vật
Ngành: Magnoliophyta
Lớp: Magnoliopsida
Bộ: Lamiales
Họ: Verbenaceae
Chi: Callicarpa

CHỈ SỐ

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