Phlox pilosa

From Coastal Plain Plants Wiki
Revision as of 20:16, 4 August 2016 by Krobertson (talk | contribs)
Jump to: navigation, search
Phlox pilosa
Phlox pilosa Gil.jpg
Photo taken by Gil Nelson
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida – Dicotyledons
Order: Solanales
Family: Polemoniaceae
Genus: Phlox
Species: P. pilosa
Binomial name
Phlox pilosa
L.
PHLO PILO dist.jpg
Natural range of Phlox pilosa from USDA NRCS Plants Database.

Common name: Downy phlox

Taxonomic notes

Synonyms: Phlox pilosa Linnaeus ssp. pilosa; P. pilosa var. pilosa

Description

"Herbaceous or subligneous, short rhizomatous or stoloniferous perennials. Leaves simple, entire, mostly subsessile. Opposite with bases connected by a stipular line or the upper cauline leaves subopposite, rarely alternate. Inflorescence cymose or paniculate-same length as the tube, tube sinuses semi-transparent; corolla salverform, the lobes cuneate or widely or narrowly obovate to suborbicular, apex entire, erose, or notched; anthers unequally inserted near base of corolla tube and included, or at the mouth of the tube and 1 or more usually exserted; styles 3, almost completely fused or appearing cleft or parted. Capsule papery, subglobose or ellipsoid, 4-6 mm long, loculicdial. A genus of considerable horticultural interest and taxonomic difficulty." [1]

"Slender, erect, flowering stems 2-5 dm tall, often with 2-5 branches from upper nodes, sterile shoots absent or not persistent. Nodes 6-12 on the flowering stems, leaves narrowly lanceolate, the largest 4-8 cm long, 3-8 mm wide, rarely wider, pubescent or glabrate, margins ciliate. Inflorescence open. Calyx 6-12 mm long, the lobes subulate; corolla pink to dark lavender, rarely white, the tube usually pubescent, 11-16 mm long, lobes obovate, 8-12 mm long, apiculate; stamens included; styles cleft ca. ½ their length." [1]

Distribution

Ecology

Habitat

Areas P. pilosa can be found include limestone glades, edge of pine-oak woodlands, pine/hardwood areas, semi-boggy slopes of longleaf pine savanna, burned upland longleaf pinelands and in mesic shaded woodlands by streamlet. [2] Has been found to grow in dry loamy sand. [2]

P. pilosa has been found to grow along highways and the remnants of slightly disturbed woodland habitats. [2]

Associated species include Rhynchospora divergens, Sporobolus vaginiflorus, slash pine and longleaf pine. [2]

Phenology

Flowering has been observed March through May. [2]

Seed dispersal

According to Kay Kirkman, a plant ecologist, this species disperses by explosion mechanisms or by ants. [3]

Fire ecology

P. pilosa shows delayed flowering in response to early-season burning. [4]

Conservation and management

Cultivation and restoration

Photo Gallery

References and notes

  1. Jump up to: 1.0 1.1 Radford, Albert E., Harry E. Ahles, and C. Ritchie Bell. Manual of the Vascular Flora of the Carolinas. 1964, 1968. The University of North Carolina Press. 869-870. Print.
  2. Jump up to: 2.0 2.1 2.2 2.3 2.4 Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Loran C. Anderson, Wilson Baker, Ann F. Johnson, R. A. Norris, Robert K. Godfrey, R. Komarek, T. MacClendon, K. MacClendon. States and Counties: Florida: Calhoun, Gadsden, Hamilton, Jackson, Leon, Wakulla. Georgia: Grady, Thomas. Compiled by Tall Timbers Research Station and Land Conservancy.
  3. Jump up Kay Kirkman, unpublished data, 2015.
  4. Jump up Pavlovic, N. B., S. A. Leicht-Young, et al. (2011). "Short-term effects of burn season on flowering phenology of savanna plants." Plant Ecology 212: 611-625.