Flora of North America species comparison

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Antennaria neglecta

Antennaria densifolia

Antennaire négligée, field pussytoes

denseleaf pussytoes
Habit Dioecious. Dioecious.
Plants

4–25 cm.

3.5–16 cm.
Stolons

2.5–18 cm.

1–2 cm.
Basal leaves

1-nerved, narrowly spatulate to cuneate-oblanceolate, 15–65 × 6–18 mm, tips mucronate, faces abaxially tomentose, adaxially gray-pubescent (green-glabrescent with age).

1-nerved, spatulate to cuneate, 3–7 × 2–5 mm, tips mucronate, faces gray-tomentose.
Cauline leaves

linear, 1.5–25 mm, distal flagged.

linear, 2–13 mm, distal flagged.
Involucres

staminate 4–7 mm; pistillate 6–10 mm.

staminate 3–6.5 mm; pistillate 4.5–7.5 mm.
Corollas

staminate 2.7–5 mm; pistillate 4.5–6.5(–7) mm.

staminate 2–3.5 mm; pistillate 2.5–4.5 mm.
Phyllaries

distally white.

distally light brown, dark brown, or black.
Heads

(1–)2–8 in corymbiform to spiciform or racemiform arrays.

2–5 in corymbiform arrays.
Cypselae

0.9–1.4 mm, minutely papillate;

pappi: staminate 3.5–6.5 mm; pistillate 6–8.5(–9.5) mm.

0.8–1.5 mm, glabrous;

pappi: staminate 2.5–3.5 mm; pistillate 2.5–3.5 mm.
Pistillate

involucres 4.5–7.5 mm.
2n

= 28.

= 28.

Antennaria neglecta

Antennaria densifolia
Phenology Flowering early–mid spring. Flowering summer.
Habitat Plains, grasslands, pastures, and open woodlands Subalpine-alpine limestone talus
Elevation 0–2500 m (0–8200 ft) 700–2800 m (2300–9200 ft)
Distribution
from FNA
AR; CO; CT; DE; IA; IL; IN; KS; KY; MA; MD; ME; MI; MN; MO; MT; ND; NE; NH; NJ; NY; OH; OK; PA; RI; SD; VA; VT; WI; WV; WY; AB; BC; MB; NS; NT; ON; QC; SK
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; MT; BC; NT; YT
[BONAP county map]
Discussion

Antennaria neglecta is a sexual progenitor of both the A. howellii and A. parvifolia polyploid complexes and has one of the more widespread ranges among the amphimictic species in the genus in North America. Amphimicts generally have small ranges compared to those of the polyploid agamic complexes derived from them. Characteristic features of A. neglecta are its lashlike stolons that bear reduced leaves (except at the ends), flags on the distal cauline leaves, and basal leaves that are green-glabrescent with age (R. J. Bayer and G. L. Stebbins 1982).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Antennaria densifolia is found on limestone talus below treeline in the MacKenzie, Richardson, and Ogilvie mountains of the District of MacKenzie and Yukon Territory and in Granite County, Montana (R. J. Bayer 1989c). It differs from A. aromatica in being non-glandular and in other characters. Herbarium specimens (in DAO) from British Columbia that morphologically appear to be a strictly gynoecious form of A. densifolia may be apomicts related to A. alpina that are derived from A. densifolia, a sexual progenitor of the complex.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 403. FNA vol. 19, p. 411.
Parent taxa Asteraceae > tribe Gnaphalieae > Antennaria Asteraceae > tribe Gnaphalieae > Antennaria
Sibling taxa
A. alpina, A. anaphaloides, A. arcuata, A. argentea, A. aromatica, A. corymbosa, A. densifolia, A. dimorpha, A. dioica, A. flagellaris, A. friesiana, A. geyeri, A. howellii, A. lanata, A. luzuloides, A. marginata, A. media, A. microphylla, A. monocephala, A. parlinii, A. parvifolia, A. plantaginifolia, A. pulchella, A. pulcherrima, A. racemosa, A. rosea, A. rosulata, A. soliceps, A. solitaria, A. stenophylla, A. suffrutescens, A. umbrinella, A. virginica
A. alpina, A. anaphaloides, A. arcuata, A. argentea, A. aromatica, A. corymbosa, A. dimorpha, A. dioica, A. flagellaris, A. friesiana, A. geyeri, A. howellii, A. lanata, A. luzuloides, A. marginata, A. media, A. microphylla, A. monocephala, A. neglecta, A. parlinii, A. parvifolia, A. plantaginifolia, A. pulchella, A. pulcherrima, A. racemosa, A. rosea, A. rosulata, A. soliceps, A. solitaria, A. stenophylla, A. suffrutescens, A. umbrinella, A. virginica
Synonyms A. athabascensis, A. campestris, A. campestris var. athabascensis, A. chelonica, A. erosa, A. howellii var. athabascensis, A. howellii var. campestris, A. longifolia, A. lunellii, A. nebrascensis, A. neglecta var. athabascensis, A. neglecta var. campestris, A. neglecta var. simplex, A. parvula, A. wilsonii A. ellyae
Name authority Greene: Pittonia 3: 173. (1897) A. E. Porsild: Bull. Natl. Mus. Canada 101: 26. (1945)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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