Plantae > Tracheophyta > Magnoliopsida > Fagales > Juglandaceae > Juglans > Juglans microcarpa
 

Juglans microcarpa (little walnut)

Synonyms: Juglans rupestris

Wikipedia Abstract

Juglans microcarpa, known also as the Texas walnut, Texas black walnut or little black walnut (as it belongs to the "black walnuts" section Juglans sect. Rhysocaryon), is a large shrub or small tree (10–30 ft tall) which grows wild along streams and ravines in Texas, New Mexico, Oklahoma, and Kansas. It produces nuts with a width of 1/2—3/4 in. The pinnately compound leaves bear 7—25 untoothed to finely-toothed leaflets, each 1/4—1/2 in wide.
View Wikipedia Record: Juglans microcarpa

Infraspecies

Juglans microcarpa var. stewartii (Stewart's little walnut)

Attributes

Height [3]  33 feet (10 m)
Width [3]  33 feet (10 m)
Air Quality Improvement [1]  Low
Allergen Potential [1]  High
Carbon Capture [1]  Medium
Screening - Summer [2]  Dense
Screening - Winter [2]  Moderate
Shade Percentage [1]  91 %
Temperature Reduction [1]  Medium
Wind Reduction [1]  Medium
Hardiness Zone Minimum [1]  USDA Zone: 5 Low Temperature: -20 F° (-28.9 C°) → -10 F° (-23.3 C°)
Hardiness Zone Maximum [1]  USDA Zone: 9 Low Temperature: 20 F° (-6.7 C°) → 30 F° (-1.1 C°)
Light Preference [2]  Full Sun
Soil Acidity [2]  Neutral
Soil Fertility [2]  Infertile
Water Use [1]  Moderate
Flower Color [2]  Green
Foliage Color [2]  Green
Fruit Color [2]  Black
Fall Conspicuous [2]  Yes
Fruit Conspicuous [2]  Yes
Bloom Period [2]  Mid Spring
Drought Tolerance [2]  Medium
Edible [3]  May be edible. See the Plants For A Future link below for details.
Fire Tolerance [2]  None
Flower Type [3]  Monoecious
Frost Free Days [2]  6 months
Fruit/Seed Abundance [2]  Medium
Fruit/Seed Begin [2]  Summer
Fruit/Seed End [2]  Summer
Growth Form [2]  Single Stem
Growth Period [2]  Spring, Summer
Growth Rate [2]  Slow
Hazards [2]  Slight Toxicity
Leaf Type [3]  Deciduous
Lifespan [2]  Perennial
Pollinators [3]  Wind
Propagation [2]  Bare Root, Container, Seed
Root Depth [2]  24 inches (61 cm)
Seed Spread Rate [2]  Slow
Seed Vigor [2]  Medium
Seeds Per [2]  92 / lb (203 / kg)
Shape/Orientation [2]  Erect
Specific Gravity [4]  0.47
Structure [3]  Tree
Usage [3]  Sometimes used as a rootstock; Plants produce chemicals which can inhibit the growth of other plants. These chemicals are dissolved out of the leaves when it rains and are washed down to the ground below, reducing the growth of plants under the tree; The roots of many members of this genus produce substances that are toxic to many plant species, especially apples (Malus species), members of the Ericaceae, Potentilla spp and the white pines (certain Pinus spp.); Wood - heavy, hard, not strong. It makes a beautiful veneer and has been very over-exploited in the wild for this purpose; It is also used in cabinet making, furniture etc;
Vegetative Spread Rate [2]  None
View Plants For A Future Record : Juglans microcarpa

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Carlsbad Caverns National Park II 15448 New Mexico, United States

Predators

Acrobasis juglandis (Pecan leaf casebearer)[5]
Dasychira meridionalis[5]
Satyrium calanus (Banded hairstreak)[5]

Range Map

North America;

Photos

Citations

Attributes / relations provided by
1i-Tree Species v. 4.0, developed by the USDA Forest Service's Northern Research Station and SUNY-ESF using the Horticopia, Inc. plant database.
2USDA Plants Database, U. S. Department of Agriculture
3Plants For A Future licensed under a Creative Commons License
4Forest Inventory and Analysis DB version 5.1, May 4, 2013, U.S. Forest Service
5HOSTS - a Database of the World's Lepidopteran Hostplants Gaden S. Robinson, Phillip R. Ackery, Ian J. Kitching, George W. Beccaloni AND Luis M. Hernández
Protected Areas provided by Carlsbad Caverns National Park
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access