Bergera macrophylla (C.C.Huang) F.J.Mou, 2023

Mou, Feng-Juan, Hu, Xiu, Ha, Bui Thu & Cuong, Nguyen Manh, 2023, Taxonomic revision of Bergera J. Koenig ex L. (Rutaceae) based on the molecular phylogeny and morphology, European Journal of Taxonomy 860, pp. 141-180 : 165-166

Bergera macrophylla (C.C.Huang) F.J.Mou , comb. nov.

urn:lsid:ipni.org:names:77314671-1

Fig. 9

Murraya kwangsiensis (C.C.Huang) C.C.Huang var. macrophylla C.C.Huang, Acta Phytotaxonomica Sinica 16 (2): 85 ( Huang 1978). – Murraya macrophylla (C.C.Huang) F.J.Mou , Guihaia 40 (2): 272 ( Mou et al. 2020). – Type: CHINA • Guangxi, Daxin, Xialei, Bitun; Z.J. Li 3198; holotype: IBK[IBK00191042] image! • Longzhou, Kejia, Longshan; X.F. Deng 10571; syntype: IBK[IBK00191043] image! • Longzhou, Jinlong, Banbi; H.Q. Li 40099; syntype: IBK[IBK00191044] image!.

Etymology

The specific epithet refers to the large leaves.

Material examined

CHINA • Guangxi Province; P. X. Tan 57677; GXMI ! • Napo, Pingmeng ; 26 Sep. 2016; F. J. Mou 543, 544; SWFC ! • 25 Nov. 2016; F. J. Mou 550; SWFC ! • 8 Dec. 2017; F. J. Mou 624, 625; SWFC ! • Baidu, Nonghua; 19 Oct. 1977; D. Fang 3-15482; GXMI ! • 17 Oct. 1990; D. Fang et al. 0885; GXMI ! • Nongbu; 22 Jul. 2013; D.X. Nong et al. 451026130722029 LY; GXMG!, GXMI ! • 27 Nov. 2013; X. Y. Huang et al. 51026131127023 LY; GXMG ! • Nonglong ; 15 Oct. 2014; B. Y. Huang et al. 451026141015067 LY; GXMG ! • Jingxi, Tunpan ; 14 Oct. 2014; Y. D. Peng et al. 451025141014005 LY; GXMG ! • Longzhou, Kejia, Longshan ; 30 Oct. 1959; X. F. Deng 10571; IBK ! • Jinlong, Banbi ; Oct. 1958; H. Q. Li 40099; IBK ! • Daxin ; 20 Nov. 1956; Z. J. Li 3198; IBK ! • Xialei ; 7 Dec. 2017; F. J. Mou 618, 619; SWFC !.

Description

Shrub, high up to 2 m. Compound leaves are 12–46 cm long; rachis rather thin, ca 28 cm long; leaflets 3–9, alternate; chartaceous, leaflets blades 7–18 × 4–10 cm, glabrous, inequilateral, pointed at the base, abruptly acuminate at the tip, very slightly denticulate, with few oil glands; lateral veins, 6–9 pairs, prominent on lower surface; petiolules cylindric, glabrous, 3–4 mm long; petiole cylindric, glabrous. Cymes are terminal, with a few small white flowers, much shorter than the leaves; pedicels longer than flowers, with 2 small bracts at the base or lower third. Flower buds are long, 6 × 2.5 cm, yellow-green, fragrant; calyxes 4-connate, indistinct, very shortly ciliate sepal with a big oil gland; petals 5, lanceolate, 4–6 mm long, 1.5 mm wide, glabrous, a few oil glands. Stamens are 10, 4 mm long; filaments dilated and pubescent upper; anthers attached by the back, oval, with a few hairs. Disks are extremely short. Ovaries are cylindric, warty, glabrous, and distinctly constricted at ca ⅓ from the apex; styles longer than ovaries, with elongated styles, and pubescent lower; stigmas inconspicuous. Berries are oval, diameter 5–10 mm, glabrous, with glands, and red when ripe, containing 1-2 seeds.

Phenology

Flowering between June and July, while fruiting from August to December.

Distribution and habitat

China, SW Guangxi (Longzhou, Daxin, Jingxi, and Napo); Vietnam. Growing in forestry of limestone hill or valley forests between alt. 550 and 1400 m.

Remarks

The species Bergera macrophylla shares few similarities of flowers with B. kwangsiensis , but both are so different in many morphological characteristics ( Mou et al. 2020). However, the taxon is more similar to B. glabra from Vietnam in leaf morphological characteristics, and different having fewer oil glands in the mesophyll, smaller cymes, fewer flowers and fruits.

Figures

Fig. 9. Bergera macrophylla (C.C.Huang) F.J.Mou comb. nov. A. Plants. B. Inflorescence. C. Flower and pistil. D–E. Infructescence. F. Seeds. Photos taken by Feng-Juan Mou in China.