Sagina nodosa

(Linnaeus) Fenzl

Vers. Darstell. Alsin., 18. 1833.

Common names: Knotted pearlwort
Illustrated
Basionyms: Spergula nodosa Linnaeus Sp. Pl. 1: 440. 1753
Treatment appears in FNA Volume 5. Treatment on page 140. Mentioned on page 141.

Plants perennial, tufted, pubescent or glabrous. Stems ascending to loosely spreading or prostrate, simple or with few-to-many lateral branches bearing only tiny, succulent, subulate leaves, not filiform. Leaves: axillary fascicles of subulate, fleshy leaves among distal cauline leaves, giving knotted appearance; basal ascending, forming tuft, not in rosettes, blade linear, ca. 15–30 mm, herbaceous, apex apiculate to mucronate, glabrous or glandular; cauline conspicuously connate basally, cuplike, proximal with blade linear to subulate, apex apiculate to mucronate, glabrous or glandular-pubescent, axillary fascicles of leaves absent; distal with blade subulate, 1–1.5 mm, fleshy, apex mucronate, glabrous. Pedicels filiform, base glabrous or glandular-pubescent. Flowers terminal and axillary, 5-merous or 4-merous and 5-merous; calyx base glabrous or glandular-pubescent; sepals elliptic, 2–3 mm, hyaline margins rarely purplish, apex frequently purplish, obtuse to rounded, remaining appressed after capsule dehiscence; petals elliptic to orbiculate, 3–4.5 mm, ca. 2 times sepal length; stamens 8 or 10. Capsules 3–4 mm, longer than sepals, dehiscing to base. Seeds dark-brown, ovoid to reniform, laterally compressed, 0.5 mm, smooth or distinctly pebbled, abaxial groove present or absent.

Distribution

V5 288-distribution-map.gif

Alta., Man., N.B., N.S., N.W.T., Nfld. and Labr. (Nfld.), Nunavut, Ont., P.E.I., Que., Sask., Maine, Mass., Mich., Minn., N.H., Europe

Discussion

Subspecies 2 (2 in the flora).

Selected References

None.

Key

1 Stems glandular-pubescent; pedicels distally glandular-pubescent; bases of calyces glandular-pubescent; basal leaf blades often glandular-pubescent (especially on margins and midrib) or glabrous Sagina nodosa subsp. nodosa
1 Stems glabrous or occasionally weakly pubescent at nodes; pedicels distally glabrous or occasionally weakly glandular-pubescent; bases of calyces glabrous or weakly glandular-pubescent; basal leaf blades glabrous Sagina nodosa subsp. borealis

"timessepallength" is not declared as a valid unit of measurement for this property.

... more about "Sagina nodosa"
glabrous +, glandular-pubescent +  and glandular +
Garrett E. Crow +
(Linnaeus) Fenzl +
glandular-pubescent +  and glabrous +
Spergula nodosa +
Laciniate (?) +, Emarginate (?) +, Jagged (?) +, 2-fid (?) +  and Entire (?) +
subulate +  and linear +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not +  and succulent +
reduced +
herbaceous +  and scarious +
glandular-pubescent +  and glabrous +
1/4 +  and 1/2 +
globose;ovoid +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
minute +
Knotted pearlwort +
conspicuous +
scarious +
dish--shaped +
expanded +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Alta. +, Man. +, N.B. +, N.S. +, N.W.T. +, Nfld. and Labr. (Nfld.) +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Maine +, Mass. +, Mich. +, Minn. +, N.H. +  and Europe +
straight +  and curved +
central +  and peripheral +
5-merous +  and 4-merous +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
disc--shaped +  and dish +
not stipulate +  and petiolate +
connate +
subulate +
fleshy +  and succulent +
purplish +  and hyaline +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
spreading;erect +
fugacious +
5 +  and 4 +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Vers. Darstell. Alsin., +
pebbled +  and smooth +
compressed +, ovoid +  and reniform +
persistent +
distinct +
5 +  and 4 +
lanceolate;elliptic or orbiculate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Illustrated +
10 (?) +  and 8 (?) +
with few-to-many lateral branches +  and simple +
procumbent +  and decumbent +
ascending;loosely spreading or prostrate +
not filiform +
subterminal +
[30 +, 5 +  and 4 +
papillate +
distinct +
5 (?) +  and 4 (?) +
list +  and count +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Spergella +
Sagina nodosa +
species +
divided +
10 +  and 8 +
rhizomatous +  and taprooted +
glabrous +, pubescent +  and tufted +
11 +, 7 +  and 6 +