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Published In: Musci Exotici 1: 63. 1818. (Musci Exot.) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/16/2009)
Acceptance : Accepted
Project Data     (Last Modified On 3/16/2009)
General Reference:

Illustration & Map     (Last Modified On 3/16/2009)
Related Objects:
Illustrations: X.-J. Li (ed.) 2000 (Pl. 11, figs. 12–23, as G. apiculata); T. Cao & Vitt 1986 (Fig. 36, as G. apiculata).

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Map: Grimmia fuscolutea Hook. (Distribution in China)

Distribution     (Last Modified On 3/16/2009)
Habitat: on exposed rocks or thin soil over rocks in the summit areas of mountains; alt. 2300–5300 m.
Distribution: China, Japan, India, Nepal, Russia, North Africa, Europe, North and South America.

Specimens Examined     (Last Modified On 3/16/2009)
Specimens Examined:
Chinese specimens examined: Jilin: Mt. Changbai, C. Gao 1080 (ALTA, IFSBH), 22500 (IFSBH). Sichuan: Mt. Gongga (Gonschiga), Handel-Mazzetti 1359 (H). Xizang: Ang-ren Co., K.-Y. Lang 1223 (MO, PE), 2201 (PE); Jia-li Co., K.-Y. Zhao 3 (IFSBH); Lin-zhi Co., K.-Y. Lang 780a (MO, PE); Long-zi Co., M. Zang 1647 (HKAS); Mang-kang Co., M. Zang 5217 (HKAS); Mi-lin Co., M. Zang 1947 (HKAS); Mo-tuo Co., Y.-G. Su 1620 (HKAS); Nie-la-mu Co., K.-Y. Lang 322a (PE); Nie-rong Co., D.-D. Tao 5317 (HKAS); Ri-ge-ze Co., Xizang Exped. Team 7593 (PE); Zhong-ba Co., Xizang Exped. Team 7586 (PE). Yunnan: Lu-quan Co., Zhu & Wu 64021 (IFSBH); Zhong-dian (Dschungdien) Co., Handel-Mazzetti 6956 (BM, E, H).

Notes     (Last Modified On 3/16/2009)
general taxon notes:
The name Grimmia apiculata Hornsch. has long been used for this species in China. According to Crum (1994), G. fuscolutea is the correct name. Grimmia fuscolutea is characterized by having arcuate setae and autoicous plants, with perigonia located just below perichaetia. The basal marginal leaf cells are elongate and thin-walled, and the upper median cells are strongly sinuose and thick-walled. The exothecial cells are elongate-hexagonal and more or less thick-walled. As the setae are often twisted and seemingly erect when dry, the arcuate condition of the setae is best observed under moist conditions. The perigonia are easily found near the foot of setae, if sporophytes are present. The small, yellowish brown plants and somewhat shiny, contorted leaves with revolute margins are distinguishing features of this species when sterile. This species shows great variation both gametophytically and sporophytically. The upper and median leaf cells are variable in shape and in the degree of wall sinuosity. Sometimes, they are quadrate or nearly so (length:width = 1–1.5:1) with less sinuose walls, while other times they are irregularly rectangular (length:width = 2–4:1) with strongly sinuose and thickened walls. The hyaline awns of leaves are normally long and nearly smooth, even those of the lowest stem leaves, but sometimes leaf apices have rather short hyaline awns or are even muticous. The capsules vary from smooth to ribbed in different populations.


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8. Grimmia fuscolutea Hook.   尖顶紫萼藓   jian-ding zi-e xian
Musci Exot. 1: 63. 1818. Type. Mexico: In frigidis Tobeccae et Islahuacae, Humboldt & Bonpland 2673 (lectotype BM, designated by Muñoz 2000b, not seen).
Dryptodon apiculatus (Hornsch.) Hartm., Handb. Skand, Fl. (ed. 3), 270. 1838. Grimmia pulvinata var. apiculata (Hornsch.) Hueb., Muscol. Germ. 710, 1833, nom. inval. orthogr. err. Grimmia apiculata Hornsch., Flora 2(2): 442. 1819, nom. illeg., incl. typ. spec. prior. Grimmia affinis Hornsch., Flora 2(1): 85. 1819. Grimmia apiculata Hornsch., Flora 1(19): 329. 1818, nom. nud. Type. Austria: Windischmattreyer Tauern, Hornschuch s.n. (lectotype B, designated by Deguchi 1978).
Grimmia micropyxis Broth., Akad. Wiss. Wien Sitzungsber., Math.-Naturwiss. Kl., Abt. 1, 133: 567. 1924. Type. China: Sichuan (Setschwan), Yuan-yan (Yenyuen) Co., 28°15′N, ca. 4150–4300 m, Handel-Mazzetti 2671 (lectotype not seen, designated by Muñoz 2000b; isolectotype S).
Plants up to 1.5 cm high, yellow to yellowish green above, brown to dark brown below, in dense cushions. Stems moderately branched, with well developed central strand in cross section. Leaves imbricate, somewhat contorted when dry, spreading when moist, 1.6–2.2 mm long, lanceolate from an ovate base, gradually narrowed upward, keeled above, ending in more or less long, nearly smooth hyaline hair-points; margins revolute on one side or both sides in widest part of leaf; costa percurrrent, with several small median cells in cross section; upper cells unistratose except bistratose at margins, variable in shape and thickness of cell walls, irregularly quadrate to rectangular, 5–23 µm × 4–8 µm (length:width = 1–4:1), with strongly sinuose, thick walls; basal marginal cells elongate, with straight, thin walls, 23–46 µm × 7–9 µm (length:width = 3–5:1), sometimes forming a differentiated hyaline alar region; basal juxtacostal cells elongate, with straight walls. Autoicous. Perichaetial leaves larger than upper stem leaves, with elongate, hyaline hair-points; perigonia located just below perichaetia. Setae arcuate, twisted when dry; capsules emergent, ovoid-globose to oblong-ovoid, 1.0–1.2 mm long, smooth or ribbed when dry; exothecial cells elongate-hexagonal; stomata numerous, present near base of urn; annuli consisting of well developed, elongate cells, rather thick-walled; opercula with obtuse beaks; peristome teeth erect, lanceolate, reddish brown above, yellowish below, perforate above, both outer and inner surface coarsely papillose throughout. Calyptrae mitrate. Spores 11–13 µm in diameter, yellowish, granulose in regular rows.


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