Dendrostoma qinlingense C.M. Tian & N. Jiang
|
publication ID |
https://dx.doi.org/10.3897/mycokeys.48.31715 |
|
persistent identifier |
https://treatment.plazi.org/id/CACDC9D3-86FB-373B-EC51-204BE1069257 |
|
treatment provided by |
|
|
scientific name |
Dendrostoma qinlingense C.M. Tian & N. Jiang |
| status |
sp. nov. |
Dendrostoma qinlingense C.M. Tian & N. Jiang sp. nov. Figure 9
Diagnosis.
Dendrostoma qinlingense produces the largest conidia amongst known species of the genus.
Holotype.
CHINA. Baoji City, Mei County, Taibai Mountain, 34°15'43"N, 107°88'42"E, 2752 m a.s.l., on branches of Quercus wutaishanica , 13 Jul. 2017, N. Jiang (holotype: BJFC-S1539; ex-type culture: CFCC 52732).
Etymology.
Qinlingense, referring to the Qinling Mountain.
Description.
Sexual morph not observed. Asexual morph: Conidiomata pycnidial, conical to pulvinate, occurring separately, dark yellow, semi-immersed in bark, 400-700 μm high, 1100-1600 μm diam.; wall of several layers of bright yellow textura angularis; central column beneath the disc conical, dark orange. Conidiophores reduced to conidiogenous cells. Conidiogenous cells lining the inner walls of the cavity, hyaline, smooth, ampulliform, 6-22 × 2-3.5 μm. Conidia hyaline, aseptate, smooth, multiguttulate, thin-walled, fusoid, straight, (15.6 –)16–18(– 18.6) × (3.1 –)3.3–3.7(– 3.8) μm, l/w = (4.2 –)4.4–5.2(– 5.8) (n = 50).
Culture characters.
On PDA, cultures are initially white, exhibiting light grey after 2 weeks. The colonies are flat with irregular edge; texture uniform, producing concentric circles with sparse conidiomata irregularly distributed on the centre of the plate within 1 month at 25 °C in the dark.
Additional specimen examined.
CHINA. Shaanxi Province: Baoji City, Mei County, Taibai Mountain, 34°15'43"N, 107°88'42"E, 2752 m a.s.l., on branches of Quercus aliena var. acutiserrata , 13 Jul. 2017, N. Jiang, living culture CFCC 52733 (BJFC-S1540).
Notes.
Dendrostoma qinlingense was discovered on two Quercus species on the Qinling Mountain in northwest China. This species is phylogenetically related to Dendrostoma osmanthi on Osmanthus fragrans . However, Dendrostoma qinlingense differs from D. osmanthi by much larger conidia (16-18 × 3.3-3.7 μm in D. qinlingense vs. 7.5-10 × 2-2.5 μm in D. osmanthi ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.