Polycladophyton gracilis D.Edwards et C.S.Li

Plant Fossil Names Registry Number: PFN000315

Act LSID: urn:lsid:plantfossilnames.org:act:315

Authors: D. Edwards & C. S. Li

Rank: species

Genus: Polycladophyton D.Edwards et C.S.Li

Reference: Edwards, D. & Li, C. -S. (2018): Further insights into the Lower Devonian terrestrial vegetation of Sichuan Province, China. – Review of Palaeobotany and Palynology 253: 37–48.

Page of description: 47

Illustrations or figures: Pl. IV (1–6)

Name is type taxon for

Polycladophyton D.Edwards et C.S.Li 2018

Types

Original protologue

Upright plant with asynchronous dichotomous branching in leafless stems showing overtopping but no dominance. Branching angles low. Vertically ovate sporangia produced asynchronously terminate one branch of a dichotomy, sometimes overtopping it. Narrow, distinct band extends over free margin of sporangium. Dehiscence unknown. Majority of stems 5–6 mm wide. Branching angles 10°–30°. Sporangial maximum diameter at mid height 1.6–2.0 mm (x = 1.8, n = 3); height 1.8–2.5 mm (x = 2.2; n = 5). Sporangial border c. 0.1 mm wide.

Etymology

Gracilis - thin, slender.

Stratigraphy

Devonian, Lower Devonian
Horizon 1 at the base of the Pingyipu Group, Lochkovian/early Pragian

Locality

China
Yanmenba section, Jiangyou district, North Sichuan

Plant fossil remain

macro- and meso-fossils-embryophytes except wood