The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

nakedstem wallflower

inuit wallflower

Habit Plants often not cespitose, caudex branched; glandular throughout or eglandular. Plants densely cespitose, caudex branched; leaves and scapes densely glandular.
Stems

(0.4–)0.7–2.7(–3.5) dm.

0.4–0.8 dm.

Leaves

petiole (0.7–)1.5–7(–10) cm, to 5 mm wide at base (glandular or not);

blade narrowly spatulate or oblanceolate to lanceolate or oblong, (1–)1.7–7 cm × (6–)10–23(–28) mm, base cuneate or attenuate, margins entire or minutely to coarsely dentate, or sometimes incised, apex acute.

petiole 0.2–1 cm, 2–4 mm wide at base;

blade obovate to broadly spatulate, 0.6–1.5(–2) cm × 4–8(–10) mm, base cuneate, margins coarsely dentate to subentire, apex acute.

Racemes

3–20-flowered.

6–16-flowered.

Flowers

sepals oblong, 5–8 × 1.5–3 mm (glandular or not);

petals lavender to white, purple, (14–)16–20(–22) × 7–10(–12) mm, claw 6–10 mm, apex emarginate;

median filaments 6–10 mm;

anthers 1.5–2.5 mm.

sepals ovate, 2.5–3.5 × 1.2–1.7 mm, eglandular;

petals lavender to purple, 6–7 × 3–5 mm, claw 2–3.5 mm, apex rounded;

median filaments 2.5–3 mm;

anthers 0.9–1 mm.

Fruiting pedicels

(proximalmost) (10–)15–40(–60) mm (glandular or not).

(proximal-most) 5–9(–12) mm.

Fruits

narrowly oblong to linear-lanceolate, (2–)3–4(–4.7) cm × (3.5–)5–7 mm;

valves glandular or eglandular;

ovules 12–16 per ovary;

style (0.5–)1–2.5(–3.5) mm.

obovate to oblong, 0.8–1.4(–1.7) cm × 5–7 mm;

valves eglandular or sparsely glandular;

ovules 6–8 per ovary;

style 0.2–1 mm.

Seeds

3.5–6 × 3–5 mm;

wing 0.7–1.5 mm wide.

4–6 × 3.5–5 mm;

wing 0.8–1.5 mm wide.

2n

= 14, 28.

Parrya nudicaulis

Parrya nauruaq

Phenology Flowering early Jun-early Aug. Flowering Jun.
Habitat Tundra, alpine stream valleys, flats and flood banks, limestone or schist mountain slopes and tops, grassy summits, disturbed gravel, moist open areas, meadows, sandy shores, mossy carpets, hillsides, alpine stony slopes, stable sand ridges, turfy snow flushes Marbleized impure carbonate landscapes, shallow decomposed granite slopes, outcrops and hogback ridges
Elevation 0-1800 m (0-5900 ft) 0-100 m (0-300 ft)
Distribution
from FNA
AK; BC; NT; YT; e Asia (Russian Far East)
[WildflowerSearch map]
[BONAP county map]
from FNA
AK
[BONAP county map]
Discussion

Parrya nudicaulis is the most variable species in the genus, especially in leaf shape, size, and margin, as well as in the presence versus absence of the extrafloral glands. Much of the confusion about its limits resulted from different emphases on various characters. For example, E. Hultén (1971), who recognized six subspecies, expanded the range of P. nudicaulis to extend from the Canadian arctic and Alaska into the Russian Far East, Siberia, Central Asia, China, and the Himalayas. Three of his four North American subspecies, sometimes growing together, are rather poorly defined morphologically and appear to have been based primarily on the degree of development of leaf teeth. By contrast, R. C. Rollins (1993) recognized a single polymorphic species that included the Utah-Wyoming endemic P. rydbergii. Within a given population of P. nudicaulis, one finds both glandular and eglandular plants with leaf margins entire or variously dentate. In my opinion, these variables alone are unreliable, and flower size, in combination with other characters, can give a better indication of taxon identity.

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

Parrya nauruaq is known from the Moon Mountains, Seward Peninsula.

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

Source FNA vol. 7, p. 512. FNA vol. 7, p. 512.
Parent taxa Brassicaceae > tribe Chorisporeae > Parrya Brassicaceae > tribe Chorisporeae > Parrya
Sibling taxa
P. arctica, P. nauruaq, P. rydbergii
P. arctica, P. nudicaulis, P. rydbergii
Synonyms Cardamine nudicaulis, Achoriphragma nudicaule, Arabis nudicaulis, Cardamine articulata, Matthiola nudicaulis, Neuroloma nudicaule, P. macrocarpa, P. nudicaulis var. grandiflora, P. nudicaulis subsp. interior, P. nudicaulis var. interior, P. nudicaulis subsp. septentrionalis
Name authority (Linnaeus) Regel: Bull. Soc. Imp. Naturalistes Moscou 34: 176. (1861) Al-Shehbaz: Novon 17: 277. (2007)
Web links