中国地衣1新记录属——珐氏衣属及其新记录种

赵祥祥，胡 玲，赵遵田*

(1 山东师范大学 生命科学学院，济南 250014；2 山东省农业科学院，济南 250014)



中国地衣1新记录属
——珐氏衣属及其新记录种

赵祥祥1，胡 玲2，赵遵田1*

(1 山东师范大学 生命科学学院，济南 250014；2 山东省农业科学院，济南 250014)

在对中国网衣类地衣进行研究时，发现1个中国新记录属——珐氏衣属及其新记录种——微型珐氏衣。该研究利用形态学和化学的手段，对微型珐氏衣的分类学特征进行了详细描述，并提供了相关照片。

地衣型真菌；新疆；分类学

The genusFarnoldiaHertel was segregated from the genusMelanoleciaHertel in 1983[1]. Previously only six species have been reported from Europe, North and South America, and Antarctica[2-3]. And has not been found in China. The family Lecideaceae Chevall. contains about 23 genera and 220 species, and 53 taxa of 11 genera in Lecideaceae have been reported in China[4-7]. During our research on the lichens of Lecideaceae in Xinjiang, the genusFarnoldiaand the speciesFarnoldiamicropsisare reported as new to China.

1 Materials and methods

The examined specimens are preserved in SDNU (the Lichen Section of Plant Herbarium, Shandong Normal University). Their morphological and anatomical characters were examined under a stereo-microscope (Olympus SZ) and a polarizing microscope (Olympus CX21). Color reactions (spot tests) were made using standard methods. The chemical constituents were identified using thin layer chromatography (TLC)[8]. Photos were taken under Olympus SZX16 and BX61 with DP72.

2 Results and discussion

FarnoldiaHertel Mitt. bot. StSamml., Münch. 19: 442 (1983)

Type species:Farnoldiajurana(Schaerer) Hertel

Thallus crustose, on or in rocks; upper surface white, sooty white, or yellow-brown; isidia and soredia absent; medulla I+blue. Apothecia adnate or between the areolae; margin present and even; disk black or sometimes pruinose; exciple carbonaceous; hypothecium hyaline or blackish brown; paraphyses coherent, branching and ana-stomosing; asci with an I+dark blue central cylinder in an otherwise I+pale blue tholus; spores simple, ellipsoid, with gelatinous halo, middle-sized, 10-33 μm long. Conidia bacilliform, (5-13)×1 μm.

Algae:Pseudotrebouxia.

Habitat: On calcium-bearing rocks.

Notes: This genus is similar in its characters toPorpidiabut differs in the entirely dark exciple in which hyphe are not distinguishable but which is continuous with the dark hypothecium. It is also similar toClauzeada. However,Clauzeadahas a I-medulla, brown to dark brown exciple. Comparison of characters ofFarnoldiaand similar genera are shown in Table 1. A key toFarnoldiaand related genera is also provided.Farnoldiamicropsis(A. Massal.) Hertel, Mitt. bot. StSamml., Münch. 19: 443 (1983)( Fig.1， A,B )

Thallus crustose, thin to moderately thick, to 1.5 mm thick, white, sooty white, sometimes stained from substratum, areolate from smooth to bullate in thick material; no hypothallus.

Apothecia to 1.2 mm broad, adnate or between the areolae, black, with prominent margin; exciple black, 40-60 μm wide; hypothecium pare ochre, sometimes contains green; epihymenium green-black to brown-black, occasionally with light dead overlayer; hymenium (80-120)μm; subhymenium 30-60 μm, pale; paraphyses 2 μm,tips to 3.5 μm, anastomosing; asci clavate; spores ellipsoid or asymmetric, thin-walled, halonate when young, (15-27)× (7-16) μm.

Table 1 Comparison of characters of Farnoldia and similar genera

Key toFarnoldiaand related genera

This is a preliminary key to the genera of Lecideaceae s. lat. that appear closely related toFarnoldia.

1 Growing on acidic rock (exceptionally on calciferous siliceous rock)

Porpidiap.p.

Growing on limestone (and other rock types very rich in CaCO3)

2

2(1) Exciple thick and carbonaceous throughout, clearly separated from the paler hypothecium. Hypothecium hyaline or blackish brown. Apothecia sessile with a black or bluish pruinose disc, never becoming brownish when wet

Farnoldia

Excipulum not carbonaceous throughout

3

3(2) Hypothecium concolorous with exciple; brown and or olivaceous pigments present internally. High montane to alpine regions

Porpidiap.p.

Hypothecium hyaline or paler than exciple; only brown, K-pigments present internally. In lowland to high montane regions

Clauzadea

A. Thallus； B. Section of apotheciaFig.1 Morphological and anatomical structures of Farnoldia micropsis(20140906 SDNU)

Chemistry: Medulla I+, K-, C-, KC-. Chemical constituent: none.

Notes:Farnoldiamicropsisis similar toF.similigenain having a white, thick and bullate thallus. However,F.similigenahas a smaller apothecia (to 0.7 mm broad), a thiner ascospores [(10-22)×(4-7) μm], and a lower hymenium (60-80 μm). This species grows on calcium-bearing rocks. It is a circumpolar arctic and alpine species. It is known in Colorado, Montana, Utah, Alberta, and Oregon[10]. It is also found in eastern Greenland, Sweden and Slovenia.

Specimens examined: Prov. Xinjiang, Huocheng, Daxigou, alt. 1 843 m, on rocks, 12 Jul. 2014, Panmeng Wang 20140906; Yili, Qapqal Forest Farm, alt. 2 376 m, on rock, 11 Jun. 2014, Panmeng Wang 20140071B, 20140072A,20140034, 20140059.

[1] HERTEL H. Uber einege ausLecideaundMelanolecia(Ascomycetes lichenisati) auszuschliessende Arten[J].MitteilungenderBotanischenStaatssammlungMünchen, 1983, 19: 441-447.

[2] FRÖBERG L. The Calcicolous Lichens on the Great Alvar of Öland, Sweden[M]. Institutionen för Systematisk Botanik, Lund. 1989:109.

[3] TRETIACH M, HAFELLNER J. Lichens and lichenicolous fungi of Mt. Fleons (Carnic Alps, Italy) I. Epilithic and epigaeic species[Flechten und lichenicole Pilze vom Mt. Fleons (Karnische Alpen, Italien) I. Gesteins und bodenbewohnende Arten][J].Herzogia, 2000,14: 99-111.

[4] FRYDAY A M, HERTEL H. A contribution to the family Lecideaceae s. lat. (Lecanoromycetidae inc. sed., lichenized Ascomycota) in the southern subpolar region; including eight new species and some revised generic circumscriptions[J].Lichenologist, 2014, 46(3): 389-412.

[5] KIRK P M, CANNON P F,etal. Dictionary of the Fungi (10th Edition).[M]. CABI Bioscience: CAB International. 2008:366.

[6] HU L, ZHAO X, SUN L Y,etal. Four lecideoid lichens new to China[J].Mycotaxon, 2014, 128: 83-91.

[7] ZHAO X X, ZHANG L L, MIAO C C,etal. A new species ofPorpidiafrom China[J].Lichenologist, 2016, 48(3): 229-235.

[8] ORANG A, JAMES P W, WHITE F J. Microchemical Methods for the Identification of Lichens[M]. (2nd edition) London: British Lichen Society, 2010.

[9] FRYDAY A M, PRINTZEN C, EKMAN S.Bryobilimbia, a new generic name forLecideahypnorumand closely related species[J].Lichenologist, 2014, 46(1): 25-37.

[10] THOMSON J W. American Arctic Lichens2. The Microlichens[M]. Madison:University of Wisconsin Press, 1997.

(编辑:潘新社)

FarnoldiaHertel —— a New Record Genus for China with Description of New Record Species

ZHAO Xiangxiang1, HU Ling2, ZHAO Zuntian1*

(1 College of Life Science, Shandong Normal University, Ji’nan 250014, China; 2 Shandong Academy of Agricultural Sciences, Ji’nan 250014, China)

During our research on the lecideoid taxa of lichens in China, the genusFarnoldiaand the speciesFarnoldiamicropsisare reported as new to China. The detailed taxonomic descriptions with photos are provided for them.

lichenized fungi; Xinjiang; taxonomy

1000-4025(2016)08-1710-03

10.7606/j.issn.1000-4025.2016.08.1710

2016-07-05;修改稿收到日期:2016-07-11

国家自然科学基金(31400015，31570017); 山东师范大学研究生科研创新基金(SCX201629)

赵祥祥(1990-)，男，在读硕士研究生，主要从事地衣分类学研究。E-mail:18264101801@163.com；

*通信作者:赵遵田，教授，博士生导师，主要从事苔藓地衣分类学研究。E-mail: ztzhao@sohu.com

Q949.34

A