Petrophytum hendersonii (Canby) Rydb.

Olympic mountain rockmat (en)

Species

Angiosperms > Rosales > Rosaceae > Petrophytum

Characteristics

Shrubs, 2–9 dm diam. Stems decumbent to ascending, 1–10 cm, internodes 0.5–1.5 cm. Leaves: blade narrowly obtrullate, sometimes oblanceolate to spatulate-obovate, 1–2(–3) × 0.2–0.6 cm, palmately 3-veined, venation visible through hairs, apex acute, abaxial surface sparsely strigose, pilose to pilose-sericeous, sometimes glabrate, sparsely strigose along veins. Panicles densely racemose, 2–5 × 1–2 cm, sparsely sericeous; bracts linear, 2–4(–6) mm, pilose. Pedicels 2–5 mm; bracteoles 1, rarely extending to base of sepals. Flowers 3–5 mm diam.; hypanthium 0.5–1 mm, sparsely pilose; sepals reflexed, oblong to obtuse, 1–1.5 mm, margins ciliate, abaxial surface sparsely pilose; petals oval, oblong, or obovate, 2–2.5 mm, apex obtuse, sometimes 2-lobate; stamens 25–40, lengths 1–1.3 times petals (2 times sepals); carpels (4–)5(–6), abaxially connate. Follicles 1.5–2 mm. 2n = 18.
Life form
Growth form shrub
Growth support -
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.13 - 0.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 1-5
Soil texture 3-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Petrophytum hendersonii unspecified picture

Distribution

Petrophytum hendersonii world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:191247-2
WFO ID wfo-0000985828
COL ID 6V6GT
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Eriogynia hendersonii Spiraea hendersonii Petrophytum hendersonii