Quercus breviloba
Encyclopedia
Quercus breviloba, commonly referred to as the Shallow-lobed Oak, is a species
of oak
tree
that grows in parts of the Southern United States
and Northern Mexico.
and gray flaking bark. Leaves
range from 3-8 cm long by 2-4.5 cm wide, with "broadly rounded and bristless" tips. Leaf shape
s are "narrowly obovate to oblanceolate or narrowly elliptic". Twig
s are glabrous or may have "scattered hairs". Leaf undersides have "numerous minute sessile
stelate hairs with horizonatally spreading rays".
and Texas
, and the northern Mexico
states of Coahuila
, Nuevo León
, and Tamaulipas
.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of oak
Oak
An oak is a tree or shrub in the genus Quercus , of which about 600 species exist. "Oak" may also appear in the names of species in related genera, notably Lithocarpus...
tree
Tree
A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to...
that grows in parts of the Southern United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
and Northern Mexico.
Taxonomy
Synonymous names for the tree species include Quercus durandii var. breviloba (Torr.) Palmer and Q. sinuata var. breviloba (Torr.) C. H. Mull.Cornelius Herman Muller
Cornelius Herman Muller was an American botanist and ecologist who pioneered the study of allelopathy.- Personal life :After graduating from the University of Illinois in 1938 with a Ph.D...
Description
The Quercus breviloba tree grows to a height of 12 m, with an 81 cm diameter at breast heightDiameter at breast height
Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree. DBH is one of the most common dendrometric measurements....
and gray flaking bark. Leaves
Leaf
A leaf is an organ of a vascular plant, as defined in botanical terms, and in particular in plant morphology. Foliage is a mass noun that refers to leaves as a feature of plants....
range from 3-8 cm long by 2-4.5 cm wide, with "broadly rounded and bristless" tips. Leaf shape
Leaf shape
In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...
s are "narrowly obovate to oblanceolate or narrowly elliptic". Twig
Twig
A twig is a small thin terminal branch of a woody plant. Twigs are critically important in identification of trees, shrubs and vines, especially in wintertime. The buds on the twig are an important diagnostic characteristic, as are the abscission scars where the leaves have fallen away...
s are glabrous or may have "scattered hairs". Leaf undersides have "numerous minute sessile
Sessility (botany)
In botany, sessility is a characteristic of plants whose flowers or leaves are borne directly from the stem or peduncle, and thus lack a petiole or pedicel...
stelate hairs with horizonatally spreading rays".
Distribution
Q. breviloba grows in the states of OklahomaOklahoma
Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...
and Texas
Texas
Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...
, and the northern Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
states of Coahuila
Coahuila
Coahuila, formally Coahuila de Zaragoza , officially Estado Libre y Soberano de Coahuila de Zaragoza is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico...
, Nuevo León
Nuevo León
Nuevo León It is located in Northeastern Mexico. It is bordered by the states of Tamaulipas to the north and east, San Luis Potosí to the south, and Coahuila to the west. To the north, Nuevo León has a 15 kilometer stretch of the U.S.-Mexico border adjacent to the U.S...
, and Tamaulipas
Tamaulipas
Tamaulipas officially Estado Libre y Soberano de Tamaulipas is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 43 municipalities and its capital city is Ciudad Victoria. The capital city was named after Guadalupe Victoria, the...
.