Phyllodon lingulatus (Cardot) W.R. Buck, 1987

Yi, Zhao-Qin, Mu, Li-Qiang & Jia, Yu, 2022, Notes on Glossadelphus M. Fleisch. (Hypnaceae, Bryophyta) in China, Phytotaxa 541 (3), pp. 225-239 : 226-228

1-1. Phyllodon lingulatus (Cardot) W.R. Buck ( Fig. 1 )

Taxithelium lingulatum Cardot, Beih. Bot. Centralbl., Abt. 2, 19(2): 136. 27. 1905. ≡ Glossadelphus lingulatus (Cardot) M. Fleisch., Musci Buitenzorg 4: 1352. 1923. Type:— CHINA. Taiwan : Kelung, Faurie 179 (isotypes: BM, H). (fide Buck 1987)

Glossadelphus baldwinii Broth., Bishop Mus. Bull. 40: 31. 7. f. 26. 1927. Type:— U.S.A. Hawaii: ad rupes crateris Olowalu, Insul. Maui occid., 1875, Baldwin 49 (lectotype, designated by Kis 2002: H [H1811049]; isolectotype: NY [NY01028880]!). (fide Kis 2002)

The detail morphological description of Phyllodon lingulatus is provided by Noguchi et al. (1994).

Habitat:—In splash zone of stream on volcanic rocks.

World distribution:— China [Guangdong ( He et al. 2004), Guizhou ( Xiong 2018), Hainan, Hong Kong ( He et al. 2004), Macao, Taiwan, Xizang ( He et al. 2004), Yunnan], Congo-Kinshasa (be known formerly as Zaire, Kis 2002), India, Japan ( Noguchi et al. 1994, Iwatsuki 2004, Suzuki 2016), Malaysia, Philippines ( Tan & Iwatsuki 1991), Thailand ( Akiyama et al. 2011, Printarakul et al. 2013), U.S.A. [Hawaii], Vanuatu ( Higuchi & Nishimura 2002).

Other specimens examined:— CHINA. Guangdong: Zhaoqing City, Dinghushan Nature Reserve, P.L. Redfearn Jr. 34376b (PE, as Glossadelphus glossoides ). Hainan: Jianfengling Mt., P.C. Chen et al. 574, 596b (PE). Yunnan: Baoshan City, D.G. Long 32721 (E [E00266023], as G. bilobatus ); Menghai Co., P.L. Redfearn Jr. 33692 (PE, as G. laevifolius ); Mengla Co., J.-X. Luo 86007 (PE [PE01410409], as G. bilobatus ), P.L. Redfearn Jr. 33692 (PE, as G. glossoides ); Jinghong Co., J.-X. Luo 86171 (PE, as G. bilobatus ), P.L. Redfearn Jr. 34281 (PE, as G. laevifolius ).

INDIA. Nagaland:Naga Hills, Changchang Pani, McCann 68 ( BM [ BM 000919387], as G. bilobatus ). MALAYSIA. Perak: Bukit Kledang hill, I. H. Burkil 13007 ( BM [ BM 000850535], as G. bilobatus ). U.S.A. Hawaii: Rod C. Stern s. n. ( BM [ BM 001058403], as G. baldwinii ), W. J. Hoe 3335 ( PH, as G. baldwinii ), J. R. Shevock 18731, 44458, 46049 (all NY), J. R. Shevock 51054 ( CAS).

Comment:— Phyllodon lingulatus is well characterized by (1) small to medium-sized, flattened, bright green and glossy plants, (2) lingulate dorsi-ventral leaves, and distinctly concave to folded lateral leaves, (3) truncate and emarginated leaf apex, (4) swollen bifid teeth along the leaf margins, (5) distinctly prorate at both ends of laminal cells, (6) smooth laminal cells, (7) distinct unequal double costae, and (8) well developed peristome. This species is mainly distributed around the tropical and subtropical regions of Asia, occasionally in Africa and Oceania. Examining specimens in China, we conclude that P. lingulatus has much wider distribution areas in China, especially in tropical and subtropical regions of China.

Figures

FIGURE 1. Phyllodon lingulatus. A–D: Dorsi-ventral leaves of branch; E–G: Lateral leaves of branch; H: Leafy branch; I: Leaf apex; J: Basal laminal cells; K: Pseudoparaphyllium and primordium; L: Plants; M–N: Apical laminal cells; O: Cross-section of stem; P: Medial laminal cells; Q: Annulus; R: Peristome; S: Exostome tooth; T: Endostome; U: Inner perichaetial leaves. All from J.-X. Luo 86007 (PE). Scale bars: a for H; b for A–G; c for I, O, Q & S; d for J–K, M–N; e for L; f for P; g for R; h for T; i for U.