中國地衣1新記錄屬
——琺氏衣屬及其新記錄種

趙祥祥，胡 玲，趙遵田*

(1 山東師范大學 生命科學學院，濟南 250014；2 山東省農業科學院，濟南 250014)

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中國地衣1新記錄屬
——琺氏衣屬及其新記錄種

趙祥祥1，胡 玲2，趙遵田1*

(1 山東師范大學 生命科學學院，濟南 250014；2 山東省農業科學院，濟南 250014)

在對中國網衣類地衣進行研究時，發現1個中國新記錄屬——琺氏衣屬及其新記錄種——微型琺氏衣。該研究利用形態學和化學的手段，對微型琺氏衣的分類學特征進行了詳細描述，并提供了相關照片。

地衣型真菌；新疆；分類學

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] FR?BERG L. The Calcicolous Lichens on the Great Alvar of ?land, Sweden[M]. Institutionen f?r 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.

(編輯: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

國家自然科學基金(31400015，31570017); 山東師范大學研究生科研創新基金(SCX201629)

趙祥祥(1990-)，男，在讀碩士研究生，主要從事地衣分類學研究。E-mail:18264101801@163.com；

*通信作者:趙遵田，教授，博士生導師，主要從事苔蘚地衣分類學研究。E-mail: ztzhao@sohu.com

Q949.34

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