Acaena pallida

(Kirk) Allan

Fl. New Zealand 1: 360. 1961. 1961

Introduced
Basionyms: Acaena novae-zelandiae var. pallida Kirk Stud. Fl. New Zealand, 134. 1899
Treatment appears in FNA Volume 9. Treatment on page 325. Mentioned on page 324.

Plants stoloniferous. Stems to 10 dm, 2–3 mm diam., rough with protruding hair-bases; branches erect, leafy. Leaves: stipules 3–4-fid; petiole 1–1.5 cm; blade 2.5–12 cm, leaflets 4–7 per side, abaxially whitish with uneven wax layer, adaxially glossy green, oblong, 6–30 mm, margins dentate, teeth 4–10 per side, rugulose adaxially, abaxial surface pilose. Scapes axillary, 7–18 cm, 1.5–2 mm diam., lacking both cauline leaves and multicellular hairs. Inflorescences 80–90-flowered, globose heads (heads 10 mm diam. in flower, 2–4 cm diam. in fruit); bracteoles linear, pilose. Flowers 4 mm diam.; sepals 4, triangular, 2 mm, abaxially pilose, adaxially glabrous; stamens 2, filaments 3–4 mm, anthers white; stigma white, fimbriate. Fruiting hypanthia obconic, 4.5–6 mm diam., surfaces covered with appressed hairs, 4-angled, each angle with a spine at apex, 9–15 mm, spines with 4–10 translucent, retrorse barbs 0.5 mm at apex, usually with 1 [–3] subsidiary spines on angles, surfaces glabrous. 2n = 42 (New Zealand).


Phenology: Flowering May–Jun.
Habitat: Coastal sands
Elevation: 0–10 m

Distribution

V9 531-distribution-map.jpg

Introduced; Calif., Pacific Islands (New Zealand), Australia

Discussion

In the flora area, Acaena pallida is known from a single collection from Marin County.

Selected References

None.

Lower Taxa

None.

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

... more about "Acaena pallida"
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Bryony Macmillan +
(Kirk) Allan +
compound +  and simple +
opposite +  and alternate +
Acaena novae-zelandiae var. pallida +
15 cm150 mm <br />0.15 m <br /> (18 cm180 mm <br />0.18 m <br />) +
spatulate +
2.5 cm25 mm <br />0.025 m <br /> (12 cm120 mm <br />0.12 m <br />) +
coriaceous +
free +  and distinct +
Calif. +, Pacific Islands (New Zealand) +  and Australia +
not +  and aggregated +
0–10 m +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
4 cm40 mm <br />0.04 m <br /> (?) +
unisexual +  and bisexual +
not +  and aggregated +
spindle--shaped +
Coastal sands +
globose +
gray +  and redbrown +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
glabrous +  and tomentose +
Angled (?) +, Obconic (?) +, Globose (?) +, Oblong (?) +, Ovoid (?) +  and Obtriangular (?) +
axillary +  and terminal +
crassinucellate +
persistent +
green +  and whitish +
0.6 cm6 mm <br />0.006 m <br /> (3 cm30 mm <br />0.03 m <br />) +
incised +, revolute +  and flat +
inferior +  and superior +
clustered +, biseriate +  and superposed +
0 (?) +  and 4 (?) +
free +  and distinct +
5 +  and 4 +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering May–Jun. +
adnate +, free +, connate +  and distinct +
Fl. New Zealand +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
7 cm70 mm <br />0.07 m <br /> (18 cm180 mm <br />0.18 m <br />) +
not arillate +
persistent +
free +  and distinct +
glabrous +  and pilose +
triangular +
2 cm20 mm <br />0.02 m <br /> (?) +
Introduced +
glandular +  and eglandular +
glabrous +  and pubescent +
free +  and distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 +  and 20 +
fimbriate +
red +  and white +
deciduous +
distinct +
basal +, lateral +, subterminal +  and terminal +
fimbriate +
Acaena pallida +
species +
4 +  and 10 +
rugulose +
inconspicuous +
enlarged +  and small +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +