| | Callitriche anceps Fernald |
| Publ. & Syn. | Fernald, Rhodora 10: 51 (1908). Lectotype (GH 48916): Canada: Quebec, Gaspé Co., W base of Table-topped Mountain, "Lac des Américains", 01. Aug. 1906, leg. M.L. Fernald and J.F. Collins 234 (Lansdown 2009: 365); epitype (GH 48916); Canada: Quebec, margin of the uppermost lake at head of E Fork of R. Ste. Anne des Monts, 08. Aug. 1906, leg. M.L. Fernald and J.F. Collins 638 (Lansdown 2009: 365). |
| Notes | Tzvelev (1980a) included Callitriche anceps in C. palustris. Callitriche anceps and C. palustris co-occur in Alaska, Canada, and Greenland and are there kept apart by fruit characters deemed to be of taxonomic value, e.g., fruit nearly orbicular and without distal wings in C. anceps vs. obovate and with distinct distal wings in C. palustris, and fruit valves with linear structures vs. without (Lansdown in preparation for Flora of North America). We accept both species as does Lansdown. |
| Chromosomes | 20 (4x, x = 5). - U.S.A. (Vermont), Greenland (W). - Löve and Löve (1975d); Dalgaard (1989). |
| Geography | North American (N): CAN GRL. |
| Distribution |
N = F
C = R
GW = s
D = S
E = S
HL = r
GE = r
[ key ] |
| Parent taxon | Callitriche L. |
| PAF ID | 800705 |