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terrestrial water-starwort

longstock water-starwort

Stem

and leaf scales present.

and leaf scales present.

Leaves

connate at base, obovate-oblanceolate to spatulate, 1.5–3.9 × 0.8–1.4(–1.5) mm, 2+-veined.

connate at base, spatulate, 2.8–5 × 1.8–3.3 mm, 1+-veined.

Inflorescences

bracts absent.

bracts caducous.

Pedicels

0.4–0.6 mm in fruit.

0–25 mm in fruit.

Flowers

usually solitary or 1 staminate and 1 pistillate opposed by 1 pistillate;

styles deflexed;

pollen yellow.

usually 1 staminate and 1 pistillate in 1 axil opposed by 1(+) pistillate;

styles erect and spreading to recurved;

pollen yellow.

Schizocarps

(0.5–)0.6–0.7(–0.8) × (0.5–)0.8–1 mm, shorter than wide;

mericarps black, not swollen, winged only at apex, wings straight, 0.01–0.03 mm wide.

0.9–1.4 × 0.8–1.2 mm, as long as or longer than wide;

mericarps black, not swollen, evenly winged throughout, wings straight, 0.03–0.1 mm wide.

2n

= 10.

Callitriche terrestris

Callitriche longipedunculata

Phenology Flowering Apr–Jul(–Aug), Nov–Dec. Flowering Mar–May.
Habitat Seasonally wet hollows, damp soils, cultivated fields, rocky grounds, paths, tracks, sandy bars. Vernal pools.
Elevation 0–600 m. (0–2000 ft.) 0–700 m. (0–2300 ft.)
Distribution
from FNA
AR; CT; DC; IL; IN; KS; KY; LA; MA; MO; MS; NC; ND; NY; OH; PA; TN; TX; VA; NB; Mexico; Central America; South America [Introduced in Asia (China, Japan)]
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from FNA
CA
[BONAP county map]
Discussion

Callitriche longipedunculata is known from most of California, including the Inner North Coast Ranges, Cascade Range Foothills, Great Central Valley, San Francisco Bay Area, and western Pensisular Ranges (R. V. Lansdown and R. E. Preston, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16691).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 17, p. 54. FNA vol. 17, p. 52.
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. stagnalis, C. stenoptera, C. trochlearis
C. brutia, C. fassettii, C. hermaphroditica, C. heterophylla, C. marginata, C. palustris, C. pedunculosa, C. peploides, C. stagnalis, C. stenoptera, C. terrestris, C. trochlearis
Synonyms C. marginata var. longipedunculata
Name authority Rafinesque: Med. Repos., hexade 2, 5: 358. (1808) — (as terrestre) Morong: Bull. Torrey Bot. Club 18: 236. (1891)
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