Flora of North America species comparison

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Noccaea fendleri subsp. siskiyouensis
Photo is of parent taxon

Siskiyou penny-cress
Stems

(0.6–)0.7–1.6(–2.4) dm.
Basal leaves

petiole differentiated from blade, (1.7–)2–3.6(–4) times longer than blade;

blade ovate to oblong, 4–8(–9) mm wide, base cuneate.
Cauline leaves

2–6.
Racemes

lax to compact.
Flowers

petals white, 3.8–6 × 1.2–2.2(–2.9) mm.
Fruiting pedicels

horizontal or slightly descending, forming an angle 80º or more with rachis.
Fruits

often strongly winged, obovate to obdeltate, (4–)4.8–7(–8) × (3–)3.5–5.5(–6) mm, 1–2 times as long as wide, apex truncate to strongly emarginate;

style (0.8–)1–2 mm.
Seeds

2–4 per fruit.
2n

= 14.

Noccaea fendleri subsp. siskiyouensis
Phenology Flowering Apr–Jun.
Habitat Moist, open rocky serpentine slopes
Elevation 300-500 m (1000-1600 ft)
Distribution
from FNA
OR
[BONAP county map]
Discussion

Subspecies siskiyouensis is known from Curry, Douglas, and Josephine counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 603.
Parent taxa Brassicaceae > tribe Noccaeeae > Noccaea > Noccaea fendleri
Sibling taxa
N. fendleri subsp. californica, N. fendleri subsp. fendleri, N. fendleri subsp. glauca, N. fendleri subsp. idahoensis
Synonyms Thlaspi montanum var. siskiyoense
Name authority (P. K. Holmgren) Al-Shehbaz & M. Koch: Syst. Bot. 29: 383. (2004)
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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