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

hoary rockcress

Habit Plants short-lived perennial; with non-woody caudices.
Stems

(1)2–6.3 dm, pubescent with many short-stalked, 3–8-rayed trichomes.

Basal leaves

oblanceolate to linear-oblanceolate, 1.5–5 mm wide;

margins usually dentate, not ciliate;

surfaces densely pubescent with short-stalked, 5–12-rayed trichomes.

Cauline leaves

7–45(65), concealing stem proximally, bases of some leaves auriculate; uppermost pubescent.

Inflorescences

10–40(64)-flowered, fruiting pedicels arched, recurved above horizontal to ascending bases, 4–10 mm, with appressed, branched trichomes.

Flowers

sexual, ascending to descending at anthesis;

sepals pubescent;

petals 5–9 × 0.8–1.8 mm, white to lavender;

pollen ellipsoid;

ovules 38–64 per ovary;

styles 0.01–0.1 mm.

Fruits

closely pendent, rarely appressed to rachis, not secund, mostly straight, 3–6.5 cm × 1.9–2.2 mm;

margins parallel, pubescent.

Seeds

uniseriate, 1.4–1.8 × 1–1.4 mm;

wings continuous, 0.1–0.3 mm wide.

2n

=14.

Boechera puberula

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Rocky slopes, ledges, gravelly hillsides in sagebrush, pinyon-juniper forests. Flowering Apr–Jul. 800–3000 m. BR, BW, Casc, ECas, Lava, Owy. CA, ID, NV, WA; southeast to UT. Native.

Source Flora of Oregon, volume 2, page 456
Ihsan Al-Shehbaz
Sibling taxa
B. acutina, B. atrorubens, B. breweri, B. calderi, B. cascadensis, B. cobrensis, B. covillei, B. cusickii, B. davidsonii, B. divaricarpa, B. drepanoloba, B. hastatula, B. horizontalis, B. howellii, B. koehleri, B. lemmonii, B. lyallii, B. microphylla, B. paddoensis, B. pauciflora, B. paupercula, B. pendulocarpa, B. pinetorum, B. platysperma, B. pratincola, B. rectissima, B. retrofracta, B. rollei, B. sparsiflora, B. stricta, B. subpinnatifida, B. suffrutescens
Synonyms Arabis puberula
Web links