Jepson eFlora: Taxon page
Vascular Plants of California
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon

Ptelea crenulata

Higher Taxonomy
Family: RutaceaeView DescriptionDichotomous Key
Common Name: RUE FAMILY
Habit: Perennial herb, shrub, tree, strongly aromatic, occasionally thorny. Leaf: generally alternate, simple or compound, dotted with minute, translucent glands; stipules 0. Inflorescence: cyme, raceme, or flowers 1, generally bracted. Flower: generally bisexual; sepals, petals each 4 or 5, free or fused at base; sepals generally persistent; petals generally +- white or +- green; stamens generally 2--4 × petal number; ovary superior, generally lobed, chambers 1--5, ovules 1--several per chamber. Fruit: berry, drupe, winged achene, or capsule. Seed: generally oily.
Genera In Family: +- 158 genera, +- 1900 species: especially tropics, warm temperate, especially southern Africa, Australia; used or cultivated for food (Citrus, 20--25 species), perfume, medicine, timber, ornamental (Choisya, Skimmia, etc). Toxicity: Some TOXIC: oils may cause sunburn or dermatitis.
eFlora Treatment Author: Lindsay P. Woodruff & James R. Shevock, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: PteleaView Description 

Common Name: HOP TREE
Habit: Shrub, small tree, flowers generally bisexual and pistillate. Leaf: pinnately compound; leaflets 3--5, +- sessile, entire to finely serrate. Inflorescence: panicle-like. Flower: sepals 4--5; petals 4--5, entire, +- green-white; stamens 4--5, filaments hairy on inner side; ovary chambers 2, style short, stigmas 2. Fruit: achene, +- flat, round, gland-dotted, winged. Seed: 2.
Etymology: (Greek: elm, from similar fruit)
eFlora Treatment Author: Michael A. Vincent & James R. Shevock
Ptelea crenulata Greene
Habit: Plant generally < 5 m. Leaf: deciduous; petiole 2--5 cm; leaflets 3, 2--7 cm, lanceolate to obovate, glabrous adaxially, +- hairy abaxially. Inflorescence: +- flat-topped. Flower: sepals minute; petals 4--5 mm, fragrant. Fruit: 1--2 cm, +- straw-colored; wing generally +- notched at tip, base; style persistent.
Ecology: Scrub, woodland; Elevation: generally < 1050 m. Bioregional Distribution: KR, NCoRI, CaR, SNF, ScV (Sutter Buttes), SnJV, SnFrB, PR. Flowering Time: Apr--May
Jepson eFlora Author: Michael A. Vincent & James R. Shevock
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Ptelea
Next taxon: Ruta

Name Search

Botanical illustration including Ptelea crenulata

botanical illustration including Ptelea crenulata

Please use this Google Form for Contact/Feedback

Citation for this treatment: Michael A. Vincent & James R. Shevock 2012, Ptelea crenulata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on March 04, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on March 04, 2024.

Ptelea crenulata
click for enlargement
©2011 Neal Kramer
Ptelea crenulata
click for enlargement
©2009 Barry Breckling
Ptelea crenulata
click for enlargement
©2009 Aaron Schusteff
Ptelea crenulata
click for enlargement
©2011 Neal Kramer
Ptelea crenulata
click for enlargement
©2011 Neal Kramer

More photos of Ptelea crenulata
in CalPhotos

Geographic subdivisions for Ptelea crenulata:
KR, NCoRI, CaR, SNF, ScV (Sutter Buttes), SnJV, SnFrB, PR.
1. You can change the display of the base map layer control box in the upper right-hand corner.
2. County and Jepson Region polygons can be turned off and on using the check boxes.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).


Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).