Arachniodes globisora (Hayata) Ching (1964: 383)

Lu, Ngan Thi, Wei, Hong-Jin, Vuong, Luong Dinh, Toan, Le Chi, Zhang, Li-Bing & Zhang, Liang, 2023, Cyrtomium calcis sp. nov. and six new records of the shield fern family (Dryopteridaceae) from Vietnam, Phytotaxa 583 (1), pp. 15-26 : 22-23

Arachniodes globisora (Hayata) Ching (1964: 383)

≡ Polystichum globisorum Hayata (1914: 193) ( Fig. 6 )

Type:— CHINA. Taiwan: Arisan, elev. 7000–8000 ped., 1912, B. Hayata & S. Sasaki s.n. (TI!).

Voucher specimens examined:— VIETNAM. Quang Tri Province: Huong Hoa District, Bac Huong Hoa Nature Reserve, Huong Phung Commune , Chênh Vênh villige, along Sa Mu stream, 16°48’12.06”N, 106°35’55.52”E, elev. ca. 1300 m, 19 November 2014, Li Bing Zhang, Liang Zhang & Ngan T. Lu 7576 ( VNMN!, CDBI!) .

Distribution:— China ( Taiwan, S Yunnan), Laos, N Thailand, Vietnam.

Notes:— Arachniodes globisora bears some morphological features which can be recognized for its identification, such as, a large plant, a rhizome and stipe base densely with reddish brown, linear-lanceolate, and soft scales, a 3- or 4-pinnate and papery lamina, a glabrescent rachis, shallowly pinnatifid pinnule margins, lobes tipped with 2 or 3 mucronate sharp teeth, and sori closer to the midvein than to the lobe margin. A. globisora is known from Taiwan and south Yunnan only in China, but our fieldwork found that this species is quite common in Vietnam and ranged from North to South-Central Vietnam.

Additional specimens examined:— VIETNAM. Laocai Province: Hoanglien Son National Park , 15 May 2009, Ngan T. Lu 489 ( VNMN!) ; Hagiang Prov.: Dongvan District , 12 May 2009, Ngan T. Lu 460 & 479 ( VNMN!) ; Hoabinh Prov.: Hang Kia Pa Co Nature Reserve , 26 February 2011, H. Schneider et al. V056 (Ngan T. Lu 479) ( VNMN!) ; Thanh Hoa Prov.: Pu Luong Nature Reserve, Pu Luong mountain , 20°28’44.06”N, 105°05’28.29”E, 1000–1400 m, 26 October 2014, Li Bing Zhang, Liang Zhang & Ngan T. Lu 7116 ( CDBI!, VNMN!) ; Quang Tri Prov.: Huong Viet Commune, Ta Rung Village, Sa Mu Pass , 21 November 2014, Li Bing Zhang, Liang Zhang & Ngan T. Lu 7606 ( CDBI!, VNMN!) ; Lam Dong Prov.: Bidoup-Nui Ba National Park, hiking trail toward Langbian peak, 12°02Γ’ 48.63”N, 108°26’05.01”E, 1930–2100 m, 17 October 2015, Li Bing Zhang et al. 8483 (CDBI!, PHH); Đắk Lắk Prov.: Chu Yang Sin National Park , Sub-area 1359, 29 October 2015, Li Bing Zhang et al. 8882 (CDBI!, PHH) ; Kontum Prov.: NW slopes of Ngoc Linh, near Ngoc linh village, primary evergreen dense mountain, 1200–2500 m, L. Averyanov. et al. VH 093 ( HNU!) .— CHINA. Yunnan: Near Pinghe Township , Lüchun County, 22°49′N, 102°30′E, 1450 m, 28 October 2009, Li Bing Zhang & H. He 4892 ( CDBI!) .— LAOS. Champasak Prov.: Parson district, Nanglon village, Dasta waterfall, in primary broad-leave ever green forest, 1120–1200m, 17 December 2008, S.-G. Wu WS-2151 ( MO!) ; Xiangkhoang Prov.: Kham (Khoun) District , 1300 m, 22 December 2008, WS-2214 & 2217 ( MO!) .

Figures

FIGURE 6. Arachniodes globisora (Hayata) Ching.—A. Upper portion of lamina showing lamina apex.—B. Lower portion of plant showing reddish brown, thin, and soft scales on rhizome.—C, D. Abaxial views of pinnae.—E.Adaxial view of lamina.—F. Lower portion of lamina and portion of petiole.