Sphagnum heinrichsii

Name

Sphagnum heinrichsii

Rank

Species

Generic Name

[Genus] Sphagnum

Authors (Pub.)

Ignatov M. S. Lamkowski P. Ignatova E. A. Perkovsky E. E.  

Publication

Mosses from Rovno amber (Ukraine) 4 [2019/6]

Journal

Arctoa

Volume

28

Issue

1

Page number

2

Year

2019

Fossil Status

leafy twigs

Stratigraphy

Priabonian

Strat. comment

in amber

Location

Velyki Telkovichi, Vladimirets District, Rovno Region, Ukraine

Paleoregion

Eurasia (Europe)

Data for Holotypus

Repository

Schmalhausen Institute of Zoology (SIZK)., National Academy of Sciences of Ukraine, Kyiv, Ukraine

Repository Number

SIZK-VT-88; [original piece of amber SIZK-VT-115 was cut into three parts, two containing parts of the Sphagnum plant(s): VT-88 (Figs. 1-35) and VT-88A (Figs. 36-42)]

Num

1

Pub.

Mosses from Rovno amber (Ukraine) 4 [2019/6]

Diagnosis

Stem longer than 1 cm, sparsely branched, with branches separated at ca. 2 mm one from another, branches single or in fascicles of two, one being much smaller than another. The bigger branches spreading from stem at right angles, as well as one branch with considerably smaller leaves. Stem leaf (only one observed) small, lingulate, appressed, 0.7×0.3 mm; distal margin likely irregularly broken; hyalocysts of proximal to middle part broad, ca. 140×70 μm, towards margin and above elongated, to ca. 150–200× 5070 μm, on dorsal side with numerous imperfect pores (with clear outline but without true perforation) along commissures 17–23 μm in diameter, separated one from another by 5–10 μm, arranged in regular rows, occasionally with few similar pores along convex hyalocyst median part; perfect (with perforation) pores few, more numerous towards apex; chlorocysts exposed to dorsal surface as narrow strips ca. 5 μm close to leaf base among especially broad cells. Branch leaves on long branches apparently arranged in rows, up to 3.0×0.7 mm, narrow lanceolate, gradually tapered to apex, flat to concave near base; hyalocysts 200–280×25–30 μm, fibrils numerous at 15–20 μm from each other (in both large leaves and in leaf only 1 mm long); pores only in few cells, mostly in distal hyalocyst corners, more rarely also in proximal corners, occasionally in other parts of leaves (some cells near base of concave leaf part with large pores along whole cell); in middle leaf part mostly imperfect pores occur and in distal parts of leaves from pendent branches cells are almost undifferentiated into chlorocysts and hyalocysts; border of longer cells not apparent, although cells close to margin in proximal part of leaf somewhat narrower; leaves from small branches are only 200 μm long; leaves in proximal part of branch 0.5 mm long, its hyalocysts distally with some pores of quite small size, <5 μm.