Chrysogrammitis musgraviana (Baker) Parris

Chen, Cheng-Wei, Hsu, Tian-Chuan, Chao, Yi-Shan, Lu, Ping-Fong, Li, Chia-Wei, Tram, Nguyen Khanh Trinh, Nguyen, Ich Le Phuoc Thanh, Dang, Minh Tri, Luu, Hong Truong & Parris, Barbara, 2020, A newly recorded genus and twelve newly recorded species of ferns for Vietnam from Lang Biang Plateau, Phytotaxa 443 (2), pp. 121-143 : 123-126

Chrysogrammitis musgraviana (Baker) Parris ( Fig. 3 )

Basionym: Polypodium musgravianum Baker (1890: 108)

Type:— PAPUA NEW GUINEA. Mt. Musgrave, May 1889, W. MacGregor 133 (holotype: K-000604061!).

Voucher specimens examined:— VIETNAM. Lam Dong Province, Lac Duong District, Da Chais Commune, Bidoup - Nui Ba National Park, Mt. Gia Rich, ca. 1700 m, 24 October 2019, T.- C. Hsu 12201 ( SGN!, TAIF!).

Additional specimens examined:— MALAYSIA. Sabah, Nuluhon Trusmadi Forest Reserve, Mt. Trusmadi, 2000–2400 m, 10 April 2015, C.- W. Chen Wade4352 (TAIF-468151!). PAPUA NEW GUINEA. Mt. Hagen, above Kwip sawmill, c. 2700 m, 21 September 1980, Parris 8135 & Croxall (K-000637998!). PHILIPPINES. Luzon, Mt. Irid, 1469 m, 11 March 1979, L. Co 2111 (K-000491426!). SOLOMON ISLANDS. Guadalcanal Province, Mt. Chaunapaho, 23 July 2016, C.- W. Chen SITW 11678 ( TNM!). VANUATU. Espiritu Santo, Mt. Tabwemasana, 1830 m, 2 September 1971, A. F. Braithwaite RSNH 2387 ( K!, NSW!).

Distribution:—This species is widely recorded in Malesia ( Indonesia, Malaysia, Papua New Guinea, and Philippines) and the Pacific Islands ( Solomon Islands and Vanuatu).

Ecology:—In Vietnam, this species has been found in ridge-top cloudy evergreen broad-leaved forests. There it grows as an epiphyte on moss-covered upper trunks along with epiphytic orchids (e.g., Bulbophyllum , Coelogyne , and Campanulorchis spp. ) and ferns (e.g., Pyrrosia and Selliguea spp. ).

Note:— Chrysogrammitis Parris is a small genus with two species distributed from south Asia ( Sri Lanka), east Asia (Taiwan), Malesia, to the Pacific Islands ( Parris 1998, 2018). Our new collection of C. musgraviana from Vietnam extends the distribution of the genus to Indochina. Morphologically, C. musgraviana can be distinguished from all other grammitid ferns known from Vietnam ( Parris et al. 2015) by having glandular hairs scattered throughout the plant.

Figures

FIGURE 3. Chrysogrammitis musgraviana—A. Habit. B. Rhizome and stipes. C. Adaxial (left) and abaxial (right) fertile fronds. D. Rhizome. E. Glandular hairs on stipes. T.-C. Hsu 12201.