Flora of North America species comparison

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Callitriche stagnalis

Callitriche brutia

callitriche des eau× stagnantes, pond water-starwort

narrow-leaf water-starwort
Stem

and leaf scales present.

Leaves

connate at base, obovate-spatulate to ± round, 4–9 × 1–4 mm, 1+-veined.

Inflorescences

bracts persistent.

Pedicels

0–0.2 mm in fruit.

Flowers

solitary;

styles erect;

pollen yellow.

Schizocarps

1.2–1.8 × 1–1.7 mm, ± as long as wide;

mericarps pale grayish brown, not swollen, winged throughout, wings straight, 0.1–0.5 mm wide.

2n

= 10.

Callitriche stagnalis

Callitriche brutia
Phenology Flowering May–Oct.
Habitat Standing water, stream margins, backwaters, ponds, pools, ditches.
Elevation 0–1500 m. (0–4900 ft.)
Distribution
from FNA
AL; CA; CT; MA; MD; ME; MO; MT; NJ; NY; OR; PA; VA; WA; WI; BC; NF; QC; SPM; Europe [Introduced in North America; introduced also in Australia]
[WildflowerSearch map]
[BONAP county map]
from FNA
OR; WA; BC; Europe; Africa [Introduced to Australia]
[BONAP county map]
Discussion

Varieties 2 (1 in the flora).

Variety brutia is known from Europe and Africa plus is introduced to Australia; it differs from var. hamulata in chromosome number (2n = 28) and pedicellate fruit.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 54. FNA vol. 17, p. 50.
Parent taxa Plantaginaceae > Callitriche Plantaginaceae > Callitriche
Sibling taxa
C. brutia, C. fassettii, C. hermaphroditica, C. heterophylla, C. longipedunculata, C. marginata, C. palustris, C. pedunculosa, C. peploides, C. stenoptera, C. terrestris, C. trochlearis
C. fassettii, C. hermaphroditica, C. heterophylla, C. longipedunculata, C. marginata, C. palustris, C. pedunculosa, C. peploides, C. stagnalis, C. stenoptera, C. terrestris, C. trochlearis
Subordinate taxa
C. brutia var. hamulata
Name authority Scopoli: Fl. Carniol. ed. 2, 2: 251. (1772) Petagna: Inst. Bot. 2: 10. (1787)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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