Observation 131046: Gymnosporangium effusum F. Kern
When: 2013-03-31
(35.7171° -84.2406° 259m)

Notes: Covering the lower portion of the trunks of living Juniperus virginiana (Eastern Red Cedar). These were thick on the bases up to the midportions of the trunk, found on 3 trees with maybe a quart on each tree, in colums growing vertically up the trunk. This would be very different from the gall formed by G. juniperus-virginianae: http://mushroomobserver.org/91474?q=1B7ku
Fruitbodies were very delicate, falling off/disintigrating when touched (maybe this was due to age/weather).

Species Lists

Images

319301
319302
319303
319304
319305
319318
Teleospores in water mounts at 400x and 200x
319319
Teleospores in water mounts at 400x and 200x
319320
Teleospores in water mounts at 400x and 200x
319321
Teleospores in water mounts at 400x and 200x
319322
325191
Dried telia on the trunks of Juniperus virginiana
325192
Dried telia on the trunks of Juniperus virginiana
325193
Dried telia on the trunks of Juniperus virginiana

Proposed Names

52% (2)
Recognized by sight
85% (1)
Eye3 Eyes3
Recognized by sight: Telia caulicolous, in long series on trunk of Juniperus virginiana, range: New York to South Carolina
Used references: Handbook of North American Uredinales
Based on microscopic features: teliospores oblong-ellipsoid 16-22 × 45-55 microns, wall brown, 1-2 microns thick

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Fruiting bodies on the trunk
By: Christine Braaten (wintersbefore)
2013-04-09 13:32:59 CDT (-0400)

Here are several images showing gelatinous telial lobes emerging from the trunks of Juniperus virginiana, labled Gymnosporangium juniperus-virginianae:
http://www.forestryimages.org/...
http://www.forestryimages.org/...
http://www.forestryimages.org/...

Did you measure the teliospores?
By: Byrain
2013-04-05 13:30:56 CDT (-0400)

Created: 2013-03-31 00:13:00 CDT (-0400)
Last modified: 2013-04-11 20:21:00 CDT (-0400)
Viewed: 159 times, last viewed: 2016-10-25 19:33:28 CDT (-0400)
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