Nitella opaca (C.Agardh ex Bruzelius) C.Agardh

• Region

  North America

• Country

  Canada

• State/Province

  Newfoundland and Labrador

• Locality

  Humber District, Serpentine Lake, shallow waters at the outlet of the lake

• Coordinates

  48.89, -58.2704

• Coordinate Uncertainty (m)

  4331.57

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coordinates on shore closest to geogr. center of Serpentine Lake. Measured from coord. to farthest extent of the lake to find linear ext. (4320 m). Used MaNIS Georef. Calculator to find uncertainty (Bounded Area).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Notes from study 5E-1-3-1
UNIVERSITE DE MONTREAL — INSTITUT BOTANIQUE
, ÎX- HERBIER DE CRYPTOGAMIE,
_J.J:	CtfocduMij, CJV\*tÛ<Ænui4-
¿JffU	uri2£/ï9VSSS* ¿So, £*¿£*4	a
Nitella	(¿Jßj. a-	<u^^t -****&?
? n
Newfoundland (Canada), Humber District.
Serpentine Lake: shallow waters at the
outlet of the lake. 14 August 1951.
coll. • Ernest Rouleau QoÜM-^-k0 JB 484
55R0tt*
Notes: axial internodes in fertile whorls reduced to nodal dimensions,
resulting in compact heads,
rays once furcate, primary rays veryshort;
dactyls two or three, abruptly aoute pointed with marked apiculate
tip
gametangia generally with geminate oogonia and a rare antheridium
at fertile branchlet furcation;
oogonium measured 715 x 572 micra,
ooronula small, early deciduous, the apical portions
of the convolutions swelling greatly into globose
knobs
oospore black in maturity, about 465 x 428 microns (but larger
ones seen), with 5-6 (mostly 5) promin&nt ridges; membrane
smooth to irregularly granulate
antheridia rare (specimen protandrous)on young branchlets,
515 - 680 microns in diameter.
y
02022466