赖氏衣属,中国地衣一新记录属

Reimnitzia, A Newly Recorded Lichen Genus to China

摘要:

报道了文字衣科一中国新记录属——赖氏衣属（Reimnitzia Kalb），该属仅含1种桑蒂赖氏衣[Reimnitzia santensis（Tuck. ）Kalb]。桑蒂赖氏衣生于树皮或苔藓上，地衣体壳状，无皮层；含有大的柱状草酸钙结晶；裂芽丰富，与地衣体颜色一致，无分枝，先呈球状，后变为蠕虫状，长度可达1.5 mm，顶部有黑色的孔区或者单个的小孔；具有Chroodiscus型子囊盘；子囊孢子棕色，亚砖壁型，孢子大小15~25 μm×8~12 μm；分生孢子器位于裂芽的顶端和地衣体疣中，分生孢子呈杆状；无次生代谢物。

Abstract:

The lichenized fungi genus Reimnitzia Kalb (Graphidaceae) is reported as new record to China. It is a monotypic genus, containing the single species R. santensis epiphytic on bark or bryophytes. Reimnitzia santensis is crustose; has no cortex structures; contains large columns of calcium oxalate crystals; has abundant isidia, which are concolorous to thallus, unbranched, first globular, then worm-like, with a length of up to 1.5 mm, and a black pore area or a single pore at the top. The species has chroodiscoid ascomata, brown submuriform ascospores sized 15-25 μm×8-12 μm, and pycnidia that occur on the tips of isidia-like structures and in thallus warts, with bacilliform conidia, and abscence of lichen compounds.