D I S C O V E R    L I F E   
Bee Hunt! Odonata Lepidoptera 
  HomeAll Living ThingsIDnature guidesGlobal mapperAlbumsLabelsSearch
  AboutNewsEventsResearchEducationProjectsStudy sitesHelp

Rhododendron prinophyllum (Small) Millais
Life   Plantae   Dicotyledoneae   Ericaceae   Rhododendron

Rhododendron prinophyllum, roseum
© Les Mehrhoff, 2008-2010 · 8
Rhododendron prinophyllum, roseum

Click on map for details about points.

80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2
Set display option above.
Click on images to enlarge.
Rhododendron prinophyllum, Whole tree
© Copyright Steve Baskauf, 2002-2011 · 4
Rhododendron prinophyllum, Whole tree
Rhododendron prinophyllum, roseum
© Les Mehrhoff, 2008-2010 · 3
Rhododendron prinophyllum, roseum

Rhododendron prinophyllum, roseum
© Les Mehrhoff, 2008-2010 · 3
Rhododendron prinophyllum, roseum
go to Discover Life's Facebook group

Following modified from Plants Database, United States Department of Agriculture
   Top | See original

http://plants.usda.gov/java/profile?symbol=RHPR ---> https://plants.usda.gov/java/profile?symbol=RHPR
https://plants.usda.gov/java/profile?symbol=RHPR ---> http://plants.usda.gov/core/profile?symbol=RHPR
http://plants.usda.gov/core/profile?symbol=RHPR ---> https://plants.usda.gov/core/profile?symbol=RHPR
Link: Skip repetitive navigation links
USDA and NRCS Identifier NRCS Logo
USDA.gov Web Site PLANTS photo banner
PLANTS Home  about PLANTS  PLANTS Team  Partners of PLANTS  What  National Plant Data Team Web Site  Help using PLANTS  Contact PLANTS
 Search the PLANTS Web site
 Name Search

 State Search
 Advanced Search
 Search Help
 Alternative Crops
 Cover Crops
 Culturally Significant
 Distribution Update
 Fact Sheets & Plant Guides
 Introduced, Invasive, and Noxious Plants
 Threatened & Endangered
 Wetland Indicator Status
PLANTS Image Gallery
 50,000+ Plant Images
Download PLANTS data
 Complete PLANTS Checklist
 State PLANTS Checklist
 Advanced Search Download
 Symbols for Unknown Plants
 NRCS State GSAT Lists
 NRCS State Plants Lists
Related tools
 Crop Nutrient Tool
 Ecological Site Information System
 PLANTS Identification Keys
 Plant Materials Web Site
 Plant Materials Publications
 USDA Plant Hardiness Map
You are here: Home / Plant Profile

Rhododendron prinophyllum (Small) Millais
early azalea

Image of Rhododendron prinophyllum

General Information
Symbol: RHPR
Group: Dicot
Family: Ericaceae
Duration: Perennial
Growth Habit : Shrub
Native Status : L48   N
Data Source and Documentation
About our new maps
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


click on a thumbnail to view an image, or see all the Rhododendron thumbnails at the Plants Gallery

©Elaine Haug. Provided by Smithsonian Institution, Department of Botany . United States, VA, Roanoke, Blue Ridge Mountain. Usage Requirements .

©Thomas G. Barnes. Usage Requirements .



Symbol Scientific Name
AZPR3 Azalea prinophylla Small
RHNUR Rhododendron nudiflorum (L.) Torr. var. roseum (Loisel.) Wiegand
RHRO4 Rhododendron roseum (Loisel.) Rehder


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Dilleniidae
Order Ericales
Family Ericaceae – Heath family
Genus Rhododendron L. – rhododendron
Species Rhododendron prinophyllum (Small) Millais – early azalea

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
New York early azalea Exploitably Vulnerable

Wetland Status

Interpreting Wetland Status

North America
Arid West FAC
Atlantic and Gulf Coastal Plain FAC
Eastern Mountains and Piedmont FAC
Great Plains FAC
Midwest FAC
Northcentral & Northeast FAC

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (RHPR)
Integrated Taxonomic Information System (AZPR3)
Integrated Taxonomic Information System (RHNUR)
Integrated Taxonomic Information System (RHPR)
Integrated Taxonomic Information System (RHRO4)
Kemper Center for Home Gardening (RHPR)
Lady Bird Johnson Wildflower Center Native Plant Information Network (RHPR)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

 PLANTS Home | USDA.gov | NRCS | Site Map | Policies and Links
Accessibility Statement | Privacy Policy | Non-Discrimination Statement

Following modified from Flora of North America
   Top | See original

Link to Flora of North America home
All Floras       Advanced Search
FNA Vol. 8 Page 459, 465, 466, 469 , 470 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 8 | Ericaceae | Rhododendron

20. Rhododendron prinophyllum (Small) Millais, Rhododendrons. 229. 1917.

Roseshell or early azalea, election-pink

Azalea prinophylla Small in N. L. Britton et al., N. Amer. Fl. 29: 42. 1914

Shrubs , to 3(-5) m, usually not rhizomatous. Stems: bark smooth to vertically furrowed, shredding; twigs scattered, multicellular eglandular-hairy (hairs unbranched), other-wise densely to sparsely unicellular-hairy. Leaves deciduous; petiole usually multicellular eglandular-hairy and unicellular-hairy; blade ovate to obovate, 3-9 × 1.2-3.7 cm, thin, membranous, margins entire, plane, conspicuously ciliate, eglandular-hairy (hairs ascending away from margins), apex acute to obtuse, often mucronate, abaxial surface sparsely to densely unicellular-hairy, sometimes also eglandular-hairy, adaxial surface usually sparsely unicellular-hairy, sometimes glabrous, often also scattered eglandular-hairy. Floral bud scales very sparsely to densely unicellular-hairy abaxially, especially near midvein, margins unicellular-ciliate. Inflorescences 4-13-flowered; bracts similar to bud scales. Pedicels 5-26 mm, usually stipitate-glandular-hairy, or, sometimes, also eglandular-hairy, otherwise sparsely to moderately unicellular-hairy. Flowers opening before or with leaves, erect to horizontal, fragrant (spicy-scented); calyx lobes 0.5-4 mm, surfaces and margins scattered stipitate-glandular- and/or eglandular-hairy, otherwise sparsely to densely unicellular-hairy; corolla usually bright pink, without blotch on upper lobe, funnelform, 25-45 mm, scattered, multicellular stipitate-glandular-hairy (hairs not form-ing distinct lines), otherwise sparsely to moderately unicellular-hairy on outer surface, petals connate, lobes 10-23 mm, tube gradually expanded into lobes, 11-27 mm (equaling or longer than lobes); stamens 5, much exserted, ± unequal, 32-53 mm. Capsules borne on erect pedicel, 10-28 × 3-7 mm, stipitate-glandular-hairy, otherwise sparsely unicellular-hairy. Seeds without distinct tails, flattened portion of testa well developed at each end; testa expanded, dorsiventrally flattened, ± loose. 2 n = 26.

Flowering spring. Acidic thickets or bogs, swampy to dry, rocky woods, bluffs, ravines, or along streams; 100-1500 m; Ala., Ark., Conn., Ill., Ky., Md., Mass., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., Tenn., Tex., Vt., Va., W.Va.

Rhododendron prinophyllum is unusual in its strongly disjunct distribution. Plants in the western portion of the range often have longer corolla tubes and are most similar to R. canescens and R. periclymenoides , and can be distinguished from both by their broader, more gradually expanded corolla tubes and usually consistently glandular sepal margins, pedicels, and ovaries. Hybrids are known with R. calendulaceum and R. periclymenoides . The name R. roseum (Loiseleur) Rehder, which has been used for this species, is illegitimate because it was superfluous when published (K. A. Kron 1989).

Following modified from CalPhotos
   Top | See original

http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Rhododendron+prinophyllum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Rhododendron+prinophyllum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

Contributors       Log In  

Number of matches : 4
Query: SELECT * FROM img WHERE ready=1 and taxon like "Rhododendron prinophyllum%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Rhododendron prinophyllum
Rhododendron prinophyllum
Mountain Azalea
ID: 0000 0000 1106 0862 [detail]
© 2006 Ron Thomas

Rhododendron prinophyllum
Rhododendron prinophyllum
Mountain Azalea
ID: 0000 0000 1106 0864 [detail]
© 2006 Ron Thomas

Rhododendron prinophyllum
Rhododendron prinophyllum
Mountain Azalea
ID: 0000 0000 1106 0865 [detail]
© 2006 Ron Thomas

Rhododendron prinophyllum
Rhododendron prinophyllum
Mountain Azalea
ID: 0000 0000 1106 0866 [detail]
© 2006 Ron Thomas

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   

Copyright © 1995-2018 UC Regents. All rights reserved.

CalPhotos is a project of BNHM      University of California, Berkeley

Updated: 2018-09-21 20:28:42 gmt
Discover Life | Top
© Designed by The Polistes Corporation