Quercus bella Chun & Tsiang., J. Arnold Arbor. 28: 326 (1947)

Binh, Hoang Thi, Ngoc, Nguyen Van, Bon, Trinh Ngoc, Tagane, Shuichiro, Suyama, Yoshihisa & Yahara, Tetsukazu, 2018, A new species and two new records of Quercus (Fagaceae) from northern Vietnam, PhytoKeys 92, pp. 1-15 : 10

Quercus bella Chun & Tsiang., J. Arnold Arbor. 28: 326 (1947) Fig. 5

Cyclobalanopsis bella (Chun & Tsiang) Chun ex Y.C. Hsu & H.W. Jen., J. Beijing Forest. Univ. 15(4): 45 (1993).

Type.

CHINA. "Fang-Cheng Hsien, Shi-Wan-Ta Shan", alt. 200-250 m, in sparsely wooded ravine along stream on moist sites, 24 Mar. 1944, S.H. Chun 4772 (IBSC [catalogue no. 0039624, image!]) .

Specimens examined in Vietnam.

Ha Noi, Ba Vi District, Ba Vi National Park , in evergreen forest: alt. 600 m, 21°04'40.6"N, 105°22'17.2"E, 11 Sep. 2016, Binh et al. V 6044, V6038 [fr.] (FU); alt. 703m, 21°04'59.6"N, 105°22'03.6"E, 21 Sep. 2017, Yahara et. al. V6981 [fr.] (DLU, FU); alt. 1023 m, 21°03'33.7"N, 105°21'39.4"E, 11 Sep. 2016, Binh et al. V6031 [fr.] (FU) .

Distribution.

China (Guangdong, Guangxi, Hainan) and Vietnam (Ba Vi National Park, Fig. 1 ).

Ecology in Vietnam.

Quercus bella was found on the slopes in evergreen forests in Ba Vi National Park: at alt. 600-1172 m.

Phenology.

Flowering from February to April, fruiting from October to December ( Huang et al. 1999). Flowering and fruiting specimens were collected from Vietnam in September.

GenBank accession no.

Binh et al. V6038: LC331259 (rbcL), LC331256 (matK).

Preliminary conservation status.

Quercus bella was only previously known as an endemic species to China and distributed in Guangdong, Guangxi and Hainan. The species is not recorded as a threatened species in IUCN (2017). Although only three fruiting individuals of Q. bella were collected in Ba Vi National Park, more individuals are expected to occur there and the habitat in the Ba Vi National Park is currently well-protected from anthropogenic activities under the law. Thus, it is appropriate to place this species under the category Least Concern (LC) following IUCN Red List ( IUCN 2012) and Vietnam Red Data book ( Ban et al. 2007).

Figures

Figure 1. Collection sites of Quercus xuanlienensis Binh, Ngoc & Bon, Quercus disciformis Chun & Tsiang. and Quercus bella Chun & Tsiang.

Figure 5. Image of Quercus bella Chun & Tsiang. A Leafy twig B Adaxial side of mature leaf C Abaxial side of mature leaf D Infructescense and mature fruit (A-D from Yahara et al. V 6981 (DLU, FU )) E Inside of cupule F Bottom of nut (E-F from Binh et al. V 6038 (FU ))