Muehlenbeckia complexa

(A. Cunningham) Meisner

Pl. Vasc. Gen. 2: 227. 1841.

Common names: Maidenhair vine lacy wirevine
IntroducedIllustrated
Basionym: Polygonum complexum A. Cunningham Ann. Nat. Hist. 1: 455. 1838
Treatment appears in FNA Volume 5. Treatment on page 485.

Plants (0.5–) 1–5 m. Stems prostrate to scandent, especially distally, sometimes rooting at nodes, striate, branched, glabrescent or puberulent, distal branches brownish-puberulent. Leaves: ocrea deciduous, brownish hyaline, cylindric, 2–3 mm, margins truncate, eciliate, faces puberulent along veins; petiole 3–10 mm, brownish-puberulent; blade ovate-oblong to suborbiculate or panduriform, 0.5–2.5 (–4) × 0.5–2.5 (–4) cm, coriaceous, base truncate, margins entire, glabrous or scabrous, apex rounded to apiculate, glabrous adaxially and abaxially, or puberulent abaxially along midvein, obscurely punctuate abaxially. Inflorescences terminal and axillary, 5–30 mm. Pedicels ascending to spreading, 1.5–2 mm. Flowers 1–2 (–5) per ocreate fascicle; perianth yellowish green or greenish; tepals connate ca. 1/4 their length, lanceolate-ovate to obovate, 2–4 mm, apex rounded to acute. Staminate flowers: anthers pink to purple, ovate to elliptic. Pistillate flowers: tube white in fruit. Achenes exserted or included, black or dark-brown, 3-gonous, 3–4 × 2–3 mm, shiny, smooth. 2n = 20 (New Zealand).


Phenology: Flowering Jul–Sep.
Habitat: Sunny, disturbed sites, often in urban areas
Elevation: 0-500 m

Distribution

V5 1012-distribution-map.gif

Introduced; Calif., Pacific Islands (New Zealand)

Discussion

Muehlenbeckia complexa is cultivated as an ornamental and escapes rarely in the flora area.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property.

... more about "Muehlenbeckia complexa"
dark-brown;black +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
included +  and exserted +
3-gonous +
pink +  and purple +
ovate +  and elliptic +
puberulent +  and , +
rounded;acute +
Craig C. Freeman +
(A. Cunningham) Meisner +
stipelike +
Polygonum complexum +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
ovate-oblong;suborbiculate or panduriform +
coriaceous +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
foliaceous +  and perfoliate +
scale-like +
just below the soil surface or and above the soil surface +  and spreading +
Maidenhair vine +  and lacy wirevine +
brownish-puberulent +
Calif. +  and Pacific Islands (New Zealand) +
0-500 m +
puberulent +
adnate +  and distinct +
pistillate +  and staminate +
bisexual +  and unisexual +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Sunny, disturbed sites, often in urban areas +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
nonmembranous +
deciduous +
cauline +  and basal +
entire +  and truncate +
scabrous +, glabrous +  and eciliate +
wavy +  and entire +
swollen +
partly +  and foliaceous +
brownish hyaline +
cylindric +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
coriaceous +  and membranous +
slightly larger +
anatropous +, , +  and orthotropous +
ascending;spreading +
accrescent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
spreading;erect +
greenish;yellowish green +
campanulate +
accrescent +
brownish-puberulent +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering Jul–Sep. +
(2-)3(-4)-carpellate +
rudimentary +
Pl. Vasc. Gen. +
slender;stout +
Introduced +  and Illustrated +
rudimentary +
branched +  and rooting +
prostrate +  and scandent +
puberulent +  and glabrescent +
papillose +
fimbriate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
spreading;erect +
Muehlenbeckia complexa +
Muehlenbeckia +
species +
lanceolate-ovate +  and obovate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
coriaceous +
persistent +
pubescent +  and glabrous +
50 cm500 mm <br />0.5 m <br /> (100 cm1,000 mm <br />1 m <br />) +