Petradoria pumila
grassy rockgoldenrod, rock goldenrod
1–20+.
blades 20–120 × 1–12 mm;
cauline well developed, coriaceous, bases cuneate to attenuate, expanded laterally and abaxially, clasping, less so distally, apices acute to attenuate.
1–5+ mm, glabrous or scabrous, resinous.
1–3, pistillate;
corollas 4–8 mm, tubes 2–3.5 mm, laminae ± elliptic, 2.5–4.5 × 0.7–2.5 mm, lobes 0.5–1 mm;
style branches 1–2 mm, linear-lanceolate, stigmatic lines extending around entire margin, appendages 0.
3.5-5.5 mm;
style branches essentially lacking, stigmatic lines 0, appendages ± 1 mm, covered with collecting hairs.
mostly tan, 1–7 × 0.5–1+ mm, margins mostly entire, apices acute to attenuate (outer), obtuse to truncate, often mucronate (inner), a darker, thickened subapical gland often present.
of ray 4–5 mm;
pappi 3.5–7 mm.
Petradoria pumila
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaves usually 1(–3)-nerved, 1–2 mm wide, often; involucres 1.3–2 mm wide; ray florets usually 1, laminae 0.7–1.5 mm wide; disc florets 2–3 | var. graminea |
1. Leaves usually 3–5-nerved, 2–12 mm wide; involucres 1.9–3 mm wide; ray florets usually (1–)2–3, laminae 1–2.4 mm wide; disc florets 2–4 | var. pumila |
CalFlora
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
