Muehlenbeckia hastulata var. hastulata

Treatment appears in FNA Volume 5. Treatment on page 486.

Plants (0.5–) 1–3 cm. Stems suberect to scandent or climbing, angular, striate, diffusely branched, glabrous, sometimes papillose, distal branches usually glabrous. Leaves: ocrea mostly persistent, brownish hyaline, cylindric, 3–5 mm, margins truncate to rounded, eciliate, faces glabrous; petiole (3–) 6–12 (–17) mm, glabrous; blade triangular-lanceolate, (2–) 2.5–4 (–5.5) × (0.8–) 1.2–2.5 (–3) cm, subcoriaceous, base hastate, margins entire or irregularly wavy, glabrous or scabrous, apex acute, glabrous adaxially and abaxially, sometimes papillose abaxially, minutely punctate abaxially and adaxially. Inflorescences terminal and axillary, 3–5 (–8) cm. Pedicels ascending to spreading, 1.5–2 mm. Flowers 1 (–3) per ocreate fascicle; perianth white, greenish white, or greenish; tepals connate ca. 1/4 their length, lanceolate-ovate to obovate, 2–3 mm, apex rounded to acute. Staminate flowers: anthers yellow or pink, ovate. Pistillate flowers: tube reddish purple to black in fruit. Achenes usually included, black, subglobose, 3–4 × 2.5–3.5 mm, shiny, smooth.


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

Distribution

V5 1014-distribution-map.gif

Introduced; Calif., South America (Argentina), South America (Chile)

Discussion

Variety hastulata is cultivated as an ornamental. It escapes rarely in the flora area and can be invasive.

Selected References

None.

Lower Taxa

None.

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

0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
subglobose +
2.5mm;3.5mm +
pink +  and yellow +
papillose +
rounded;acute +
Craig C. Freeman +
(Smith) I. M. Johnston +
hastate +
Rumex hastulatus +
4 cm40 mm <br />0.04 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
triangular-lanceolate +
subcoriaceous +
1.2 cm12 mm <br />0.012 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 +
Calif. +, South America (Argentina) +  and South America (Chile) +
0-500 m +
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 +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
nonmembranous +
deciduous +
cauline +  and basal +
scabrous +, glabrous +  and eciliate +
wavy +, entire +, truncate +  and rounded +
swollen +
partly +  and foliaceous +
brownish hyaline +
persistent +
cylindric +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 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;greenish white;greenish;greenish white;white +
campanulate +
accrescent +
1.2 cm12 mm <br />0.012 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Flowering Jul–Aug. +
(2-)3(-4)-carpellate +
rudimentary +
Contr. Gray Herb. +
slender;stout +
Introduced +
rudimentary +
climbing +  and scandent +
papillose +
fimbriate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
spreading;erect +
Muehlenbeckia hastulata var. hastulata +
Muehlenbeckia hastulata +
variety +
lanceolate-ovate +  and obovate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
coriaceous +
reddish purple;black +
persistent +
pubescent +  and glabrous +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +