Flora of North America species comparison

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Nicotiana obtusifolia

desert tobacco
Habit Herbs, annual or short-lived perennial, without marked basal rosette.
Stems

branched from base, (slender, brittle), 5–10 dm, viscid-tomentose.
Cauline leaves

petiole short and winged or leaves sessile;

proximal blades oblanceolate to narrowly elliptic, distal blades panduriform to trigonate, 5–20 cm, smaller very near inflorescence, base somewhat clasping, apex acute or acuminate, surfaces densely viscid-pubescent.
Inflorescences

secund false racemes, occasionally few-branched, somewhat leafy; flowering diurnal.
Pedicels

0.2–0.5 cm.
Flowers

calyx green, cup-shaped, 10-ribbed, 0.8–2 cm, with minute membranous sinuses, pubescent and somewhat rough, lobes triangular to long-triangular, ± unequal, as long or longer than tube, tips slightly recurved;

corolla straight, 1.2–3.5 cm (excluding limb), viscid-pubescent externally, tube gray-green, cream, or ± yellowish cream, 0.3–0.6 cm × 2–4 mm, widening to throat 6–12 × 5 mm, glabrous or minutely puberulent within, limb slightly reflexed to spreading, cream or whitish green, pentagonal, 0.6–8 cm diam., lobes broadly triangular and rounded apically, equal;

stamens inserted at base of throat, included;

filaments unequal, 4 straight, 1.2–3.4 cm, sometimes kneed, extending to corolla mouth, 1 shorter, 1–2 cm, not kneed, curved away from corolla, all slightly pubescent just above insertion point;

style straight, just exceeding longest stamens.
Fruiting calyces

not tearing at sinuses, covering lower 2/3 of capsule.
Capsules

broadly ovoid (acute), 0.8–1.1 cm.
Seeds

0.5 mm.
2n

= 24.

Nicotiana obtusifolia
Phenology Flowering year-round.
Habitat Rocky or gravelly areas in deserts.
Elevation 0–2500(–2900) m. [0–8200(–9500) ft.]
Distribution
from FNA
AZ; CA; NM; NV; OK; TX; UT; Mexico
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 14. Treatment author: Sandra Knapp.
Parent taxa Solanaceae > Nicotiana
Sibling taxa
N. acuminata, N. attenuata, N. clevelandii, N. glauca, N. longiflora, N. plumbaginifolia, N. quadrivalvis, N. repanda, N. rustica, N. sylvestris, N. tabacum
Synonyms N. glandulosa, N. multiflora, N. palmeri, N. trigonophylla
Name authority M. Martens & Galeotti: Bull. Acad. Roy. Soc. Bruxelles 12(1): 129. (1845)
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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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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