Mirabilis gigantea

(Standley) Shinners

Field & Lab. 19: 177. 1951.

Endemic
Basionym: Allionia gigantea Standley Contr. U.S. Natl. Herb. 12: 348. 1909
Synonyms: Oxybaphus giganteus (Standley) Weatherby
Treatment appears in FNA Volume 4. Treatment on page 55. Mentioned on page 41.

Stems erect, moderately leafy in proximal 2/3 of plant, few branched distally, 5–20 dm, basally finely pubescent with appressed, curled hairs often in 2 bands or rarely glabrate; distally densely puberulent with appressed, curled hairs. Leaves ascending at 30–45°, progressively reduced toward infloresence; petiole 0.2–1 cm; blade grayish green, ovate to broadly lanceolate or oblong, 5–10.5 × 1.8–8 cm, coriaceous, base cuneate to round, truncate, or cordate, apex usually acute to obtuse, occasionally round, surfaces usually glabrous, sometimes very sparsely puberulent with curved hairs. Inflorescences usually terminal, main axis with short side branches, sometimes short branches present in upper axils; peduncle 5–19 mm, usually densely puberulent with curled hairs, sometimes sparsely so, occasionally spreading-villous, crosswalls of hairs pale; involucres pale green, widely bell-shaped, 4–5 mm in flower, 7–9 mm in fruit, sparsely to densely puberulent with curved hairs, 50–70% connate, lobes ovate. Flowers 3 per involucre; perianth rose-pink to pale-pink, 1 cm. Fruits dark grayish brown, narrowly obovoid, 4–5.3 mm, shaggy-pubescent with spreading hairs often tufted on tubercles, hairs 0.3–0.5 mm, also with layer of minute hairs; ribs usually paler, round-angular, 0.5–1 times width of sulci, as wide as high, irregularly notched or tuberculate, often most deeply so near apex; sulci usually with small dark tubercules or raised, horizontal, riblike tubercles.


Phenology: Flowering spring–fall.
Habitat: Sandy, open fields or woods
Elevation: 200-300 m

Discussion

In the northern portion of the range, Mirabilis gigantea appears to intergrade with M. albida.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Mirabilis gigantea"
tuberculate +
Richard W. Spellenberg +
(Standley) Shinners +
glutinous +
cuneate +  and round truncate or cordate +
constricted +
woody +, leathery +  and fleshy +
Allionia gigantea +
grayish green +
5 cm50 mm <br />0.05 m <br /> (10.5 cm105 mm <br />0.105 m <br />) +
ovate;broadly lanceolate or oblong +
1.8cm;8cm +
persistent +
distinct +, , +  and connate +
corollalike +  and petaloid +
branched +, congested +  and open +
subsessile +  and sessile +
Okla. +  and Tex. +
200-300 m +
curved +  and straight +
inconspicuous +  and showy +
cleistogamous +, chasmogamous +  and bisexual +
brown +  and dark grayish +
shaggy-pubescent +
obovoid +
0.4 cm4 mm <br />0.004 m <br /> (0.53 cm5.3 mm <br />0.0053 m <br />) +
Sandy, open fields or woods +
connate +
minute +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
bell--shaped +
accrescent +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
herbaceous;papery +
sessile +  and petiolate +
reduced +
5-lobed +
pubescent +  and glabrous +
entire +  and crisped +
spreading-villous +  and puberulent +
0.5 cm5 mm <br />0.005 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
chasmogamous +  and cleistogamous +
5-lobed +  and flared +
constricted +
1 cm10 mm <br />0.01 m <br /> (?) +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering spring–fall. +
Field & Lab. +
not evident +  and defined +
pubescent +  and glabrous +
tuberculate +  and smooth +
globose +, ellipsoid +, obovoid +  and round +
0.5-1 times width of sulci +
thick +  and thin +
cordlike +  and cylindric +
membranaceous +
ribbed +, 10-ribbed +  and 5-ribbed +
pubescent +, glabrous +  and warty +
wrinkled +
branched +  and leafy +
fusiform +  and linear +
filiform +
mucilaginous +
puberulent +  and glabrous +
slightly rugose +  and prominently tuberculate +
Oxybaphus giganteus +
ropelike +  and swollen +
Mirabilis gigantea +
Mirabilis sect. Oxybaphus +
species +
gland-tipped +
expanded +
pubescent +  and glabrous +