全 文 ：菌 物 学 报 26（3）：321~323，2007
Mycosystema



A new species of Gymnosporangium (Uredinales) occurring
upon Sabina vulgaris Antoine (Cupressaceae)
ZHAO Zhen-Yu1 ZHUANG Jian-Yun2, 3*
(1Xinjiang Agricultural University, Urumqi 830052,China; 2Institute of Mycology, Jilin Agricultural University, Changchun
130118,China; 3Key Laboratory of Systematic Mycology & Lichenology, Institute of Microbiology, Chinese Academy of
Sciences, Beijing 100101,China)
Abstract: Gymnosporangium tianschanicum sp. nov. on Sabina vulgaris from Hami, Xinjiang Autonomous
Region in northwest of China is described. The species is quite easily recognized by the presence of uredinial
stage, and the unicellular teliospores occasionally intermixed with urediniospores in the uredinia.
Key words: Gymnosporangium tianschanicum, rust fungi, description, China

叉子圆柏上的胶锈菌一新种
赵震宇 1 庄剑云 2,3*
(1 新疆农业大学 乌鲁木齐 830052；2 吉林农业大学菌物研究所 长春 130118；3 中国科学院微生物研究所真菌地衣系统学重点
实验室 北京 100101)
摘 要：描述了采自新疆哈密叉子圆柏 Sabina vulgaris 上的胶锈菌属一新种，即天山胶锈菌
Gymnosporangium tianschanicum。此种因产生夏孢子阶段和单胞冬孢子（少量混生于夏孢子堆中）而不同
于胶锈菌属的其它已知种。
关键词：天山胶锈菌，锈菌目，描述，中国
中图分类号：Q939.5 文献标识码：A 文章编号：1672-6472（2007）03-0321-0323

A new species of the genus Gymnosporangium (Uredinales) occurring upon twigs of Sabina
vulgaris Antoine (Cupressaceae) from Xinjiang Autonomous Region of northwestern China is
reported in this paper. The rust is distinctive that the uredinia and urediniospores are present, and a
few of teliospores occasionally intermixed with urediniospores in the uredinia are unicellular. The
infected twigs of the host plant are deformed and enlarged, forming globoid galls on which the
pulvinate and somewhat pulverulent sori of the rust occur. No inoculation experiment was made and
the life cycle of the rust was still unknown, but it was probable that the infection was
juniper-to-juniper without alternation of hosts. Because of the unique morphological characteristics, it

The project supported by National Natural Science Foundatioin of China (No.30499340)
*Corresponding author. E-mail: zhuangjyun@im.ac.cn
Received: 2007-04-05, Revised: 2007-04-15
DOI:10.13346/j.mycosystema.2007.03.001
322 菌 物 学 报 26 卷

Fig.1 Urediniospores (1) and teliospores (2) of
Gymnosporangium tianschanicum Z.Y. Zhao & J.Y.
Zhuang sp. nov. (HMAS 52233).
is believed that the rust represents an undescribed species. A description of the rust follows.
Gymnosporangium tianschanicum Z.Y. Zhao & J.Y. Zhuang sp. nov. Fig.1
Uredinia plerumque ad ramos juniores evoluta, in incrassationibus ramorum gallaeformibus
usque ad 5mm vel ultra diam. insidentia, pulvinata, saepe confluentia, per totam rami incrassationem
occupantia, subpulverulenta, castaneo-brunnea; urediniosporae globoideae, ellipsoideae vel
obovoideae, 20~28(~33)×15~20μm, membrana 1.5~2μm crassa, subtilissime densiuscule verruculosa,
cinnamomeo-brunnea vel flavo-brunnea, pori germinationis circa 6~10 sparsi conspicui, papillis latis
humilibus praediti, pedicello longissimo hyalino usque ad 125μm vel ultra longo.
Telia non visa; teliosporae rarissime in urediniis immixtae unicellulares, vulgo ellipsoideae vel
obovoideae, utroque rotundatae vel basi leviter attenuatae, 22~35 × 15~23μm, membrana 1~1.5(~2)
μm crassa, flavida vel brunneola, levigata, poris germinationis duobus uno apicali alio basali et
papillatis praedita, pedicellus non visus, probabiliter dissolutus.
Hab. in ramis Sabinae vulgaris Antoine ( = Juniperi sabinae L.) in Hami in montibus Tian Shan
(Tianschan) in regione Xinjiang (Sinkiang) sinica, leg. B.H. Jiang, 25 Augustus 1983, HMAS 52233
(holotypus, hic designatus), HMAS 90033. Specimina hujus speciei in Herbario Mycologico
Academiae Sinicae (HMAS) in Beijing conservantur.
Uredinia ramicolous, on globoid gall-like excrescences of young twigs up to 5mm diam. or
larger, pulvinate, confluent, often cover the whole or a great part of the gall surface, somewhat
pulverulent, chestnut-brown; urediniospores globoid, ellipsoid or obovoid, 20~28(~33) × 15~20μm,
wall 1.5~2μm thick, finely verruculose,
cinnamon-brown or yellowish-brown, pores 6~10,
with broad illdefined colourless caps, pedicels very
long, up to 125μm or longer, colourless.
Telia not seen; teliospores occasional in the
uredinia 1-celled, mostly ellipsoid or obovoid,
rounded at both ends or slightly narrowed below,
22~35×15~23μm, wall 1~1.5(~2)μm thick,
pale-yellow or brownish, smooth, pores 2, apical and
basal, pedicels not seen, probably dissolved.
On twigs of Sabina vulgaris Antoine ( =
Juniperus sabina L.). Hami, Tian Shan (Tianschan)
Mountains, Xinjiang (Sinkiang), China, coll. B.H.
Jiang, 25 Aug. 1983, HMAS 52233 (holotype),
HMAS 90033. The specimens cited are kept in
3 期 赵震宇等：叉子圆柏上的胶锈菌一新种 323

Herbarium Mycologicum Academiae Sinicae in Beijing.
Three species of Gymnosporangium, G. nootkatense Arthur (1916) from North America, G.
paraphysatum Viennot-Bourgin (1960) from Vietnam, and G. gaeumannii H. Zogg (1949, see also
Gäumann, 1959) from Eurasia and North America, were known to have uredinial stage. The
teliospores of these species are often 2-celled except that in G. paraphysatum the normal 2-celled
teliospores are sometimes accompanied by 3- or 4-celled ones. Our species is a remarkably
distinctive one because of its uniformly 1-celled teliospores. The only previous known species of the
genus Gymnosporangium having uniformly 1-celled teliospores is G. tsingchenensis C.T. Wei (1947,
see also Tai, 1979) on Cupressus funebris Endl. from Sichuan Province of southwestern China.
Because of its much larger teliospores (34.6~59.4 × 24.7~31.3μm according to the original
description), it is clearly distinguished from our new species.

[REFERENCES]
Arthur JC, 1916. A Gymnosporangium with repeating spores. Amer J Bot, 3: 40~45
Gäumann E, 1959. Die Rostpilze Mitteleuropas. Buchdruckerei Büchler & Co., Bern. 1~1407
Tai FL, 1979. Sylloge Fungorum Sinicorum. Science Press, Beijing. 1~1527 (in Chinese)
Viennot-Bourgin G, 1960. Gymnosporangium paraphysatum sp. nov. sur le Heyderia macrolepis au Viet-Nam. Rev Mycol, 25:
293~305
Wei CT, 1947. Two new fungi from Szechuan. Bot Bull Acad Sin, 1: 209~212
Zogg H, 1949. Über ein neues, Uredo-bildendes Gymnosporangium: Gymnosporangium gaeumanni n. sp. Ber Schweiz Bot
Ges, 59: 421~426

[附中文参考文献]
戴芳澜，1979. 中国真菌总汇. 北京：科学出版社. 1~1527

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