Pseudognaphalium helleri |
Pseudognaphalium biolettii |
|
---|---|---|
Heller's cudweed, Heller's rabbit-tobacco |
Bioletti's rabbit-tobacco, two-color rabbit-tobacco, two-tone everlasting |
|
Habit | Annuals (fragrant), 30–100 cm; fibrous-rooted (roots relatively thick and lignescent). | Perennials (fragrant), 20–70(–120) cm; taprooted. |
Stems | greenish, glandular-villous (without persistent tomentum, stipitate glands mostly 0.3–1 mm, often variable, stalks broadened toward bases, about equaling gland widths). |
(sometimes lignescent near bases) proximally glabrescent, distally persistently tomentose, at least in the region of the heads, not glandular. |
Leaf | blades mostly oblong-lanceolate, 2.5–7 cm × 4–20 mm, bases not clasping, not decurrent, margins flat, faces bicolor, abaxial white to gray with lightly persistent tomentum, adaxial green, both minutely stipitate-glandular. |
blades (not crowded, internodes mostly 5+ mm), oblong-oblanceolate to oblanceolate (the distal lanceolate), 1.5–5(–8) cm × 4–10(–15) mm, bases auriculate-clasping, not decurrent, margins flat or slightly revolute, often undulate, faces bicolor (at least basal and proximal cauline), abaxial white-tomentose, adaxial bright green and ± densely glandular. |
Involucres | campanulate, 6–7 mm. |
turbinate-campanulate, 5–5.5(–6) mm. |
Pistillate florets | 83–107. |
41–73. |
Bisexual florets | 9–15. |
5–13. |
Phyllaries | in 4–6 series, white (opaque, shiny), ovate to ovate-oblong or oblong, ± tomentose. |
in 4–5 series, white or sometimes slightly pinkish (opaque, shiny), ovate to oblong-ovate or oblong (often longitudinally wrinkled or grooved), glabrous. |
Heads | in corymbiform arrays. |
in corymbiform arrays. |
Cypselae | ridged, smooth. |
ridged, smooth. |
Pseudognaphalium helleri |
Pseudognaphalium biolettii |
|
Phenology | Flowering Sep–Oct(–Nov). | Flowering Apr–Jun(–Oct). |
Habitat | Dry woods and openings, clay and sandy clay, sand hills | Rocky slopes, roadsides, sandy plains with Larrea, coastal strand, matorral, and chaparral |
Elevation | 10–300 m (0–1000 ft) | 5–600(–1200) m (0–2000(–3900) ft) |
Distribution |
AL; AR; FL; GA; LA; MS; NC; OK; SC; TN; TX; VA
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CA; Mexico (Baja California, Baja California Sur)
|
Discussion | Pseudognaphalium helleri and P. micradenium are similar to P. obtusifolium in most features; both differ in their glandular stems without the persistent whitish tomentum of P. obtusifolium. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 19, p. 421. | FNA vol. 19, p. 423. |
Parent taxa | Asteraceae > tribe Gnaphalieae > Pseudognaphalium | Asteraceae > tribe Gnaphalieae > Pseudognaphalium |
Sibling taxa | ||
Synonyms | Gnaphalium helleri, Gnaphalium obtusifolium var. helleri | Gnaphalium bicolor |
Name authority | (Britton) Anderberg: Opera Bot. 104: 147. (1991) | Anderberg: Opera Bot. 104: 147. (1991) |
Web links |