Tuesday, August 7, 2018

[Botany • 2018] Berberis morii • A New Species of Berberis Sect. Wallichianae from Taiwan

Berberis morii  Harber & C.C. Yu

in Harber, Chung & Yu, 2018.
  森氏小檗   DOI: 10.6165/tai.2018.63.235 

 In a revision of Berberis Sect. Wallichianae in Taiwan and Luzon, the Philippines, two of the authors recognized 11 species from Taiwan, including three new species. This article recognizes a further new species, Berberis morii, and places it in the same clade with other species from Taiwan. Rather than reproduce all the observations that were made there, we simply note that Taiwan is an important center of endemism of B. Sect. Wallichianae. In comparing the floral structure and overall morphology of B. morii with similar taxa from Taiwan, China and India, a series morphological differences, both qualitatively and quantitatively, were noted. Phylogenetic analysis was also used to evaluate the endemicity of B. morii.

KEY WORDS: Berberis, Cloud forest, Flora of Taiwan, Hualien, New species, Mori Ushinosuke. 

Berberis morii Harber & C.C. Yu, sp. nov. 

Type: TAIWAN: Cultivated; Hualian, Guangfu Logging Trail, ..., 1576 m, 20 March 2016, J. F. Harber & C. C. Yu 2016-01 (Holotype: HAST 141801!) 

Fig. 1. Berberis morii Harber & C.C. Yu
A. Plant in nature. B. Adventitious roots. C. Densely pruinose abaxial surface. D. Flower from plant in cultivation; abaxial view showing sepals. E. Petal with nectaries and stamen. F. Distribution of B. morii.

Fig. 3. Berberis morii Harber & C.C. Yu. 
A. Flowering branch. B. Flower, abaxial view. C. Flower, adaxial view. D. First whorl sepal. E. Inner sepals. F. Petal with pair of ovoid nectaries at base. G. Dehisced stamen. H. Stamen before dehiscence. 
Illustrations by HanYau Huang.

Distribution & habitat: eastern Taiwan, Hualien Hsien; known from only two small colonies, one on the side of Guangfu Logging Trail at 1576 m, the second at the summit of Mt. Wanwuta (Fig. 1F).

Etymology: Berberis morii is named for the Japanese ethnographer, Mori Ushinosuke, who was the first to collect plants in the area where B. morii was found. 

Julian Harber, Kuo-Fang Chung and Chih-Chieh Yu. 2018. A New Species of Berberis Sect. Wallichianae from Taiwan, Berberis moriiTaiwania. 63(3); 235-240, 2018 DOI: 10.6165/tai.2018.63.235