Plants and animals of Pointfield

An informal survey of the plant and animal life living in or visiting the grounds of Pointfield, Kelso since 2015   

Fungi 

 

Rosellinia britannicum


Appearance

Clusters of small (ca. 1.5-2.0 mm diameter) hard, black, domed perithecia, scattered to close-packed patches. Each has a smooth surface with a small projecting nipple at its centre (in ripe ones a small hole takes the place of the nipple). Spores are uniserially aligned inside asci (8 per asci) and the end of the asci has a conspicuous cork-shaped cap that is relatively short and wide (5.0-6.4 um length x 3.8-4.2 um width). Spores elongate oval, dark brown in KOH; 22-25 um in length x 7.5-8.6 um in diameter (mean = 24.3 x 8.4 u, N = 20) ; with a long, slightly diagonal, line marking the germ slit along almost their full length; terminal cap not seen. The length of  the ascal apparatus, the spore dimensions and the occurrence on long dead branches points to this being R. britannica rather than R. mammiformis.

Habitat

Growing on well-rotted broken pieces of holly branch on the ground.


Months observed