LIAS light – Item Descriptions
LIASlight ItemID: 7700
Polychidium polychidioides (Zahlbr.) Henssen
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Americas – South and Central America |
| substrate: | bark, cork, plant surface – trunks, branches, twigs | leaves, fronds, needles – living |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | fruticose (fruticous), shrub-like, beard-like |
| [th] upper surface: | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | blue(ish) grey |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) width [mm]: | (low) 0.1 (high) 0.16 |
| [th] morphol substructures (eg lobes, branches): | anisotomic-dichotomous | subdichotomous | irregular |
| [th lower surface] specific structures: | present |
| [th lower surface] rhizines, rhizoid structures: | present |
| ascomata: | absent | present |
| ascoma: | apothecial, apothecioid – hymenial |
| ascoma [mm]: | (min) 1.5 |
| [ascm, if apoth] disc, mazaedium: | subconvex, slightly convex |
| [ascm, if apoth] disc, mazaedium: | red(dish) brown (if pale: orange brown) |
| [ascm] paraphyses/-oids: | present |
| [ascm] paraphyses/-oid cells width [µm]: | (low) 1.5 (high) 2.5 |
| asci: | lecanoralean |
| [asc] tholus: | thickened |
| [asc] tholus amyloidity (iodine reaction): | present |
| [asc] tholus amyloidity pattern: | with amyloid cap (= Icmadophila-, Lecidea-, Pertusaria-types etc) |
| ascospores: | (median) 8.0 |
| [asp] shape: | subglobose, subspherical | oval |
| [asp] length [µm]: | (median) 11.0 |
| [asp] width [µm]: | (low) 7.5 (high) 9.0 |
| [asp] septa: | absent – spore lumen unilocular, monolocular |
| [asp] pigmentation: | hyaline, colourless |
| [asp] perispore, epispore: | ornamented, rough, warted, striate, cracked |
| conidiomata: | absent | present |
| [co] length [µm]: | (median) 3.0 |
| secondary metabolites: | absent |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | cyanobacterial |