Vitis shizishanensis Z.Y.Ma, J.Wen, Q.Fu & X.Q.Liu, 2021

Ma, Zhi-Yao, Wen, Jun, Fu, Qiang & Liu, Xiu-Qun, 2021, Vitis shizishanensis, a new species of the grape genus from Hubei province, China, PhytoKeys 184, pp. 45-54 : 45

publication ID	https://dx.doi.org/10.3897/phytokeys.184.70045
persistent identifier	https://treatment.plazi.org/id/0A6A496C-22B5-5DCE-A353-35D34F09E80E
treatment provided by	PhytoKeys by Pensoft
scientific name	Vitis shizishanensis Z.Y.Ma, J.Wen, Q.Fu & X.Q.Liu
status	sp. nov.

Treatment

Vitis shizishanensis Z.Y.Ma, J.Wen, Q.Fu & X.Q.Liu sp. nov.

Figures 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5 , 6 View Figure 6

Type.

China. Hubei: Wuhan City, Shizishan Mountain , 30°28'44"N, 114°21'48"E, 21 m, 6 May 2021, in fl., X.Q. LIU 755 (holotype: CCAU!; isotypes: CCAU!, GoogleMaps US!).

Diagnosis.

Vitis shizishanensis is morphologically similar to V. bryoniifolia Bunge, V. flexuosa Thunb, V. sinocinerea W. T. Wang, and V. bellula (Rehder) W. T. Wang, but differs from the V. bryoniifolia , V. sinocinerea , and V. bellula in its glabrous to hirtellously pubescent abaxial mature leaf surface (vs. abaxially densely arachnoid tomentose in V. bryoniifolia , V. sinocinerea , and V. bellula ). It differs from Vitis flexuosa in its leaves varying from unlobed to 3-7 lobed (vs. unlobed to slightly 3-lobed leaves in V. flexuosa ), tendrils unbranched or bifurcate from upper half (vs. tendrils bifurcate from approximately midway in V. flexuosa ), lack of arachnoid tomentum (vs. with sparse arachnoid tomentum to glabrescent in V. flexuosa ), and subcordate to cordate or sometimes truncate leaf base (vs. subtruncate or slightly subcordate leaf base in V. flexuosa ).

Description.

Woody climber, sprawling to moderately high climbing, sparsely branched. Branchlets terete, glabrous, with longitudinal ridges, tendrils unbranched or bifurcate from upper half. Leaves simple; stipules ovate-elliptic or lanceolate, 1-4 mm; petiole 2-6 cm, hirtellous or glabrous; blade 3-10 × 3-9 cm, unlobed to slightly 3-lobed, or 3-7 lobed, apex acute to acuminate, base subtruncate or subcordate to cordate, abaxial surface usually glabrous, veins and vein axils hirtellous, adaxial surface glabrous, basal veins 5, with lateral veins 4-6 pairs. veinlets inconspicuous, base subcordate to cordate, occasionally truncate. Margin with 8-16 obtuse teeth on each side. Inflorescences a panicle, 3.4-9 cm, leaf-opposed, peduncle 1-6.4 cm, pedicel 1-2.5 mm, usually glabrous. Calyx shallow and saucer-shaped, glabrous. Petals 5, occasionally 6, connate distally, forming calyptra. Berries black, globose, 5-8 mm in diam. Seeds obovoid or obovoid-elliptic, 3-4 × 2-3 mm, abaxial surface with a round to elliptic chalaza, adaxial surface with 2 furrows (ventral infolds) running ½ through seed length, endosperm M-shaped in transverse section.

Additional specimens examined.

China. Hubei. Tianmen City, Mawan Town, 15 Jul 2020, fr, X.Q. Liu 944 (CCAU); Wuhan , Shizhishan , 26 m, May 6, 2021, in flower, X. Q. Liu 155 (CCAU) (see photos in Suppl. material 1: Fig. S 1, Suppl. material 2: Fig. S 2, Suppl. material 3: Fig. S 3) .

Phenology.

Flowering from March to May, fruiting from July to October.

Etymology.

The specific epithet is derived from the type locality, Shizishan, Wuhan, Hubei, China. The Chinese name is given as “狮子山葡萄”.

Distribution and habitat.

The new species is currently known from Wuhan and Tianmen in Hubei province, China (Fig. 7 View Figure 7 ). It occurs on the scrubland and the roadside of farmland at an altitude of ca. 10-50 m.

Vitis shizishanensis is morphologically similar to V. bryoniifolia , V. flexuosa , V. sinocinerea , and V. bellula. Detailed morphological comparisons among the three species are provided in Table 1 View Table 1 . These characters were based on field observations, and herbarium and literature studies ( Li et al. 1996; Chen et al. 2007; Wan et al. 2008).