Nuttallanthus canadensis

(Linnaeus) D. A. Sutton

Revis. Antirrhineae, 457. 1988.

Common names: Canada toadflax linaire du Canada
WeedyEndemic
Basionym: Antirrhinum canadense Linnaeus Sp. Pl. 2: 618. 1753
Synonyms: Linaria canadensis (Linnaeus) Dumont de Courset
Treatment appears in FNA Volume 17. Treatment on page 41.

Fertile stems 1–4 (–7), simple, rarely distally branched, 11–70 cm. Leaves: blades of sterile-stem leaves narrowly elliptic to obovate, 2–12 × 0.5–3 mm, blades of fertile-stem leaves linear, 5–43 × 0.5–2.2 mm. Racemes 1–18 cm; bracts narrowly oblanceolate or lanceolate to narrowly elliptic, 1.1–3 mm. Pedicels erect, 1.8–5.5 mm in fruit, sparsely glandular-pubescent, sometimes glabrous, hairs to 0.1 mm. Flowers: calyx lobes linear-lanceolate to narrowly ovate, 2.1–3.5 × 0.4–1 mm, proximally sparsely glandular-pubescent, sometimes glabrous; corolla white to blue, 8–14 mm, spurs straight or curved, 2–7 mm, abaxial lip 2–4.5 mm, adaxial 1.2–2 (–3) mm. Capsules oblong-ovoid, 2.6–3.9 × 2.6–3.3 mm. Seeds black or gray, 0.3–0.5 mm, edges sharp, faces obscurely tuberculate. 2n = 12.


Phenology: Flowering Feb–Jul(–Sep).
Habitat: Sandy prairies, woodlands, roadsides, fallow fields, disturbed sites.
Elevation: 0–300 m.

Distribution

B.C., N.B., N.S., Ont., P.E.I., Que., Ala., Ark., Calif., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., Wash., W.Va., Wis., in e Europe (Russia)

Discussion

Nuttallanthus canadensis and N. texanus are sympatric through much of their ranges. In Texas, where they sometimes occur in mixed populations, R. Kral (1955) observed that N. canadensis bloomed and set fruit earlier than did N. texanus.

Selected References

None.

Lower Taxa

None.
... more about "Nuttallanthus canadensis"
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Craig C. Freeman +
(Linnaeus) D. A. Sutton +
alternate +, opposite +, whorled +, helical +  and subopposite +
Antirrhinum canadense +
0.5 cm5 mm <br />0.005 m <br /> (4.3 cm43 mm <br />0.043 m <br />) +
narrowly elliptic;obovate +
not leathery +  and not fleshy +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
lanceolate;narrowly elliptic +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
2.1mm;3.5mm +
glabrous +  and glandular-pubescent +
linear-lanceolate;narrowly ovate +
short-cupulate +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
oblong-ovoid +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
Canada toadflax +  and linaire du Canada +
personate +  and bilabiate +
white +  and blue +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
B.C. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Ala. +, Ark. +, Calif. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +  and in e Europe (Russia) +
drupe-like +
0–300 m. +
curved +  and straight +
tuberculate +
1 +  and 4 +
0.2 cm2 mm <br />0.002 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
Sandy prairies, woodlands, roadsides, fallow fields, disturbed sites. +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
terminal +  and axillary +
whorled +  and alternate +
persistent +  and deciduous +
lanceolate;narrowly ovate or oblong +
entire +  and subentire toothed or lobed +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
glabrous +  and glandular-pubescent +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
5 +  and 4 +
essentially +
Flowering Feb–Jul(–Sep). +
Revis. Antirrhineae, +
spikelike +
1 cm10 mm <br />0.01 m <br /> (18 cm180 mm <br />0.18 m <br />) +
minute +
gray +  and black +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Weedy +  and Endemic +
curved +  and straight +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
branched +  and simple +
climbing +  and scrambling +
decumbent to ascending +  and prostrate +
glandular-pubescent +  and glabrous +
11 cm110 mm <br />0.11 m <br /> (70 cm700 mm <br />0.7 m <br />) +
Linaria canadensis +
Nuttallanthus canadensis +
Nuttallanthus +
species +
not gibbous +
biennial +  and annual +