Uropappus lindleyi (DC.) Nutt.
Lindley's microseris (Lindley's silverpuffs)
Asteraceae (Aster family)
Introduction to Vascular Plants
Lindley's microseris (Lindley's silverpuffs)
Asteraceae (Aster family)
Introduction to Vascular Plants
Species Information
General:
Annual herb from a taproot; stems erect, simple, leafy below, branched at or near the base, glabrous, exuding milky juice when broken, 10-70 cm tall.
Leaves:
Basal leaves linear, long-pointed at the tip, 15-30 cm long, entire or pinnately cut with spreading, linear, swept-back lobes, tapering below into a broad, somewhat clasping and sparsely long-hairy stalk that is often fringed with small hairs; stem leaves similar, reduced.
Flowers:
Heads with strap-shaped flowers, solitary, terminating the branches; involucres 15-30 mm tall; involucral bracts lanceolate, the inner ones graduated, the outer ones few, somewhat graduated; ray flowers yellow.
Fruits:
Achenes slender, 7-17 mm long, blackish; pappus of 5 linear scales, each terminating in a shorter, hairlike bristle arising from a distinct bifid notch in the scale tip.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
Ecological Framework for Uropappus lindleyi
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
| Site Information |
Value / Class |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
920 | 920 | 920 |
| Slope
Gradient (%) |
23 | 23 | 23 |
|
Aspect (degrees) |
280 | 280 | 280 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
0 | 0 | 0 |
| Modal
Nutrient Regime
Class |
A | ||
| #
of field plots species was recorded in: |
1 | ||
| Modal
BEC Zone Class |
IDF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
IDF(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Mesic grassy, rocky bluffs in the lowland zone; rare in SW BC, known only from and disjunct in the Gulf Islands; S to ID, AZ, NM and CA.Status Information
| Origin Status | Provincial Status | BC List (Red Blue List) | COSEWIC |
|---|---|---|---|
| Native | S1S2 | Red | E (Mar 2008) |
BC Ministry of Environment: BC Species and Ecosystems Explorer.
Synonyms
Synonyms and Alternate Names:
Microseris lindleyi (DC.) A. Gray
Microseris linearifolia (Nutt.) Sch. Bip.
Uropappus linearifolius Nutt.
Similar Species
There are three species of Microseris in B.C. that could be confused with Microseris lindleyi: M. borealis, M. nutans, and M. bigelovii. M. borealis and M. nutans are perennials which have more conspicuous ray flowers that well exceed the involucre, whereas M. lindleyi and M. bigelovii are annuals which have inconspicuous ray flowers that equal or barely exceed the involucre. M. lindleyi has linear pappus scales, each terminating in a short hair-like bristle that arises from a distinctly bifid notched scale tip, and has stems that are leafy below and branched at or near the base. In contrast, M. bigelovii has lanceolate pappus scales, each terminating in a long hair-like bristle that arises from a pointed scale, and has leafless, unbranched stems. Other species of the Lactuceae tribe are also morphologically similar, but only M. lindleyi has the hair-like bristle arising from a distinct, bifid notch in the scale-tip of the pappus (Douglas and Smith 2004h).
Source: British Columbia Conservation Data Centre |