Nicotiana longiflora
Nicotiana repanda
long-flower tobacco
fiddleleaf tobacco, wild tobacco
single or with few spreading lateral branches, 5–8(–10) dm, sparsely pubescent, usually not viscid, tuberculate.
loosely branched, 5–15 dm, rough with minute tubercules.
sessile;
blade ovate to lanceolate or linear, 1–5 cm, progressively smaller and more linear towards inflorescence, base auriculate, apex acute to attenuate, surfaces coarsely viscid-pubescent.
sessile;
blade pandurate, becoming smaller distally, distal leaves oblong-ovate or pandurate, 1–5 cm, base clasping, apex acute, surfaces softly viscid-pubescent.
false racemes, occasionally with few weak branches, not leafy; flowering crepuscular.
long, flexuous false racemes, occasionally with shorter lateral branches, not leafy; flowering crepuscular.
0.5–1.3 cm.
0.3–0.7 cm.
calyx green or occasionally somewhat purplish-tinged, 1.5–2.5 cm, tube elliptic, 10-ribbed, sinus membranes long and transparent, minutely pubescent, sometimes viscid, lobes usually spreading, subulate, ± equal, equaling tube;
corolla straight, 4–12 cm (excluding limb), puberulent externally, tube and throat not well differentiated, straight, white or often grayish white, 2 mm diam. at base, gradually widening and somewhat broader in distal 1/4, abruptly swollen to 6 mm diam. just below constricted mouth, glabrous or minutely puberulent internally, limb spreading, sometimes with purplish-gray veins abaxially, adaxially white or ivory, stellate, 2–5 cm diam., lobes triangular to deltate, acute;
stamens inserted in upper part of tube just below mouth, included;
filaments unequal, free for at least some of their length (anthers not sessile),four 0.1–0.8 cm (2 of these slightly longer), 1 shorter, ca. 0.1 cm, glabrous;
style straight, just exceeding stamens, exserted from corolla mouth.
calyx green, 1.5 cm, minutely hispid, tube globose, strongly 10-ribbed, lobes erect, linear, length equaling tube, subequal, viscid-pubescent;
corolla white, straight, 4–6 cm (excluding limb), sparsely pubescent or glabrous at base, tube white, straight, 3–5.5 cm × 1 mm, gradually widening to gaping throat 5–6 × 3 mm, cobwebby-pubescent internally, limb spreading or (in daytime) slightly assurgent, white, pentagonal, 2–2.4 cm diam., lobes acute apically;
stamens inserted at base of throat, included;
filaments equal (fused to corolla tube for their entire length, anthers appearing sessile), glabrous;
style straight, equaling stamens.
not tearing at scarious sinuses, nearly covering capsule, lobe tips spreading.
not tearing at sinuses, covering entire capsule.
ovoid, 1.1–1.6 cm.
ovoid, 1 cm.
0.5 mm.
0.6 mm.
leaves sessile;
blade elliptic to oblanceolate, 10–30(–50) cm, base narrowed and winged, surfaces coarsely viscid-pubescent.
leaves: petiole short and winged or leaves sessile;
blade spatulate to oblong-ovate, 10–15 cm, surfaces softly viscid-pubescent.
= 20.
= 48.
Nicotiana longiflora
Nicotiana repanda
Nicotiana longiflora is a relatively rare weed along rivers and in waste places. It could be confused with N. plumbaginifolia, with which it is sympatric along the Gulf Coast, but differs from that species in its much larger flowers and its strongly 10-ribbed calyx. In a vegetative state, the two species are very difficult to distinguish.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Nicotiana repanda occurs along the Gulf Coast and in Texas in southern, central, and the eastern edge of west Texas, in adjacent Mexico, and on the island of Cuba. It overlaps in distribution with N. plumbaginifolia but is easy to distinguish from that species by its pandurate (fiddle-shaped) cauline leaves and longer, thinner flowers.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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