Postia Fr.
Creators: name: Shen, Lu-Lu
name: Cui, Bao-Kai
name: Dai, Yu-Cheng
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Polyporales
Fomitopsidaceae
Postia

description: Key to species of Postia in China
1. Basidiocarps effused-reflexed, pileate or stipitate ................................................................................................................. 2
1. Basidiocarps resupinate........................................................................................................................................................ 24
2. Basidiocarps stipitate or substipitate ...................................................................................................................................... 3
2. Basidiocarps effused-reflexed or pileate ................................................................................................................................ 4
3. Pores 1 – 3 per mm ............................................................................................................. P. subundosa Y.L. Wei & Y.C. Dai
3. Pores 3 – 5 per mm .................................................................................................... P. ceriflua (Berk. & M.A. Curtis) Julich
4. Basidiocarps with distinct grey to bluish tints ....................................................................................................................... 5
4. Basidiocarps white, cream, yellowish or brown ................................................................................................................... 7
5. On angiosperm wood .................................................................................................................. P. alni Niemelä & Vampola
5. On gymnosperm wood ........................................................................................................................................................... 6
6. Basidiospores <1.8 um wide ....................................................................................................... P. caesia (Schrad.) P. Karst.
6. Basidiospores> 1.8 um wide ................................................................................................ P. luteocaesia (A. David) Julich
7. Basidiocarps becoming brown when bruised or when dry .................................................................................................... 8
7. Basidiocarps unchanged when bruised or dry ..................................................................................................................... 11
8. Gloeocystidia present ............................................................................................................................................................ 9
8. Gloeocystidia absent ............................................................................................................................................................ 10
9. Context duplex ...................................................................................................................................................... P. duplicata
9. Context homogeneous .................................................................................................................................... P. leucomallella
10. Basidiospores <1.6 um wide ..................................................................................................................... P. lateritia Renvall
10. Basidiospores> 1.7 um wide .................................................................................................................................... P. fragilis
11. Basidiocarps chalky when dry .............................................................................................. P. calcarea Y.L. Wei & Y.C. Dai
11. Basidiocarps fragile, corky or woody hard when dry .......................................................................................................... 12
12. Cystidia present.................................................................................................................................................................... 13
12. Cystidia absent .................................................................................................................................................................... 15
13. Cystidia thin-walled ............................................................................................................. P. amurensis Y.C. Dai & Penttilä
13. Cystidia thick-walled ........................................................................................................................................................... 14
14. Cystidia amyloid in Melzer’s reagent ..................................................................... P. pileata (Parmasto) Y.C. Dai & Renvall
14. Cystidia inamyloid in Melzer’s reagent .............................................................................................................. P. balsamea
15. Pores bigger, 1 – 3 per mm ................................................................................................................... P. undosa (Peck) Julich
15. Pores smaller,> 3 per mm.................................................................................................................................................... 16
16. Gloeocystidia present ........................................................................................................................................................... 17
16. Gloeocystidia absent ............................................................................................................................................................ 18
17. Hyphal pegs abundant .................................................................................................................................. P. gloeocystidiata
17. Hyphal pegs absent .............................................................................................................. P. qinensis Y.C. Dai & Y.L. Wei
18. Pileal surface more or less pink when fresh........................................................................................................................ 19
18. Pileal surface never pink when fresh ................................................................................................................................... 20
19. Basidiospores> 1.5 µm wide ............................................................................................... P. persicina Niemelä & Y.C. Dai
19. Basidiospores <1.5 µm wide ....................................................................................................................................... P. cana
20. Pileal surface zonate ................................................................................................................... P. zebra Y.L. Wei & Y.C. Dai
20. Pileal surface azonate........................................................................................................................................................... 21
21. Basidiocarps mild, upper surface greyish brown ............................................................................ P. tephroleuca (Fr.) Jülich
21. Basidiocarps bitter, upper surface cream or yellow-brownish............................................................................................. 22
22. Basidiospores> 2 µm wide ............................................................................................................ P. guttulata (Sacc.) Jülich
22. Basidiospores <2 µm wide .................................................................................................................................................. 23
23. Basidiocarps woody hard when dry .................................................................................................... P. stiptica (Pers.) Jülich
23. Basidiocarps fragile when dry .............................................................................................................. P. lactea (Fr.) P. Karst.
24. Basidiocarps becoming reddish to rusty brown when bruised ................................................................................. P. lateritia
24. Basidiocarps unchanged when bruised ................................................................................................................................ 25
25. Basidiospores mostly> 2 µm wide ...................................................................................................................................... 26
25. Basidiospores mostly <2 µm wide ...................................................................................................................................... 30
26. Cystidia present ..................................................................................................................... P. sericeomollis (Romell) Jülich
26. Cystidia absent .....................................................................................................................................................................27
27. Basidiocarps salmon pink; basidiospores 2–3 µm wide ......................................... P. placenta (Fr.) M.J. Larsen & Lombard
27. Basidiocarps white or cream; basidiospores 2–2.5 µm wide ............................................................................................... 28
28. Basidiocarps with rancid smell ............................................................................ P. rancida (Bres.) M.J. Larsen & Lombard
28. Basidiocarps without rancid smell ...................................................................................................................................... 29
29. Basidiocarps very large, gloeopleurous hyphae present ...................................................... P. obliqua Y.L. Wei & W.M. Qin
29. Basidiocarps small, gloeopleurous hyphae absent ............................................................................. P. subplacenta B.K. Cui
30. Cystidia thick-walled .............................................................................................. P. pileata (Parmasto) Y.C. Dai & Renvall
30. Cystidia thin-walled ............................................................................................................................................................. 31
31. Pores 5–6 per mm; basidiospores mostly <1 µm wide ...................................................................... P. simanii (Pilát) Jülich
31. Pores 3–4 per mm; basidiospores mostly> 1 µm wide ............................................... P. hibernica (Berk. & Broome) Jülich
description: Published as part of Shen, Lu-Lu, Cui, Bao-Kai & Dai, Yu-Cheng, 2014, A new species of Postia (Polyporales, Basidiomycota) from China based on morphological and molecular evidence, pp. 147-156 in Phytotaxa 162 (3) on pages 153-154, DOI: 10.11646/phytotaxa.162.3.3, http://zenodo.org/record/5132062