Subgenus Pinus - yellow or hard pines
subgenus Pinus (diploxylon or hard pines, with two fibrovascular bundles in the needles)
Subgenus Pinus
Scale with a sealing band.
Umbo dorsal.
Seedwings articulate.
Two fibrovascular bundles per leaf.
About 73 species.
Aromatic
more resen
Cones take two or three years to mature.
Cotyledons are the first leaves produced when the plant emerges from the seeds.
There may be from 4 to 24 of them (24 cotyledons, from Pinus maximartinezii, is the largest number known in any plant).
Primary leaves are single, alternate usually helically arranged)
Acicular leaves that are usually produced only for the first year of growth or from a wound.
Cataphylls are alternate (helically arranged) non-chlorophyllous primary leaves produced on shoots; they are typically small, subulate or lanceolate, with erose-hyaline to ciliate margins, leaving
a distinctive pattern when they fall off the shoot.
Subgenus PINUS has several number of sides of the needles (only Pinus monophylla has a round needle)
Identification includes the distribution of stomata (waxy white specks on the leaf surface),
and stiffness of the needles
Pines are mostly monoecious, having the male and female cones on the same tree
Resin of some species is important as the source of turpentine, pitch
white inner bark, or cambium, is eatable.
Subgenus Pinus discription:
Scale with a sealing band. Umbo dorsal.
Seedwings articulate. Two fibrovascular bundles per leaf.
The defining morphology:
Cone scales with a dorsal umbo and a sealing band. Seedwings usually articulate (easily removed). Two fibrovascular bundles per leaf.
Leaf stomata on both ventral and dorsal surfaces
Subgenus Pinus - yellow or hard pines
Section Pinus
mostly in Europe, Asia, except for P. resinosa in northeast North America and P. tropicalis in Cuba.
SECTION PINUS (Eurasian Hard Pines)
Subsection PINUS
(The only subsection)
Features: Leaves in fascicles of 2-3; small cones, mature in 18 months with flexible scales, opening early and falling completely from the branch .
Pinus. densata - Sikang Pine
Pinus. densiflora - Japanese Red Pine
SPECIES Densiflora
RedPine
Pinus. heldreichii - Bosnian Pine
Pinus. hwangshanensis - Huangshan Pine
Pinus. kesiya - Khasi Pine
Pinus. luchuensis - Luchu Pine
Pinus. massoniana - Masson's Pine
Pinus. mugo - Mountain Pine
Pinus. nigra - European Black Pine
SPECIES Nigra
Black Pine
Pinus. resinosa - Red Pine
Pinus. sylvestris - Scots Pine
Pinus. tabuliformis - Chinese Red Pine
Pinus. taiwanensis - Taiwan Red Pine
Pinus. thunbergii - Japanese Black Pine
Pinus. tropicalis - Tropical Pine
Pinus. yunnanensis - Yunnan Pine
SPECIES Yunnanensis
China Yunnan Pine (endangered)
Section Pinea - Mediterranean pines
Subsection Pineae
Pinus. pinea - Stone Pine
Subsection Pinaster
Pinus. brutia - Turkish Pine
Pinus. canariensis - Canary Island Pine
SPECIES Pinus. halepensis - Aleppo Pine
Aleppo Pine
Pinus. latteri - Tenasserim Pine
Pinus. merkusii - Sumatran Pine
Pinus. pinaster - Maritime Pine
Pinus. roxburghii - Chir Pine
Section Trifoliae (American Hard Pines)
Subsection Leiophyllae - Mexico, southwestern United States
Pinus. leiophylla - Chihuahua Pine
Pinus. lumholtzii - Lumholtz' Pine
SPECIES Pinus. lumholtzii - Lumholtz' Pine
Lumholtz' Pine
Subsection Australes - North America, Central America, Caribbean
Pinus. caribaea - Caribbean Pine
Pinus. clausa - Sand Pine
Pinus. cubensis - Cuban Pine
Pinus. echinata - Shortleaf Pine
Pinus. elliottii - Slash Pine
Pinus. glabra - Spruce Pine
Pinus. hondurensis - Honduras Pine
Pinus. occidentalis - Hispaniolan Pine
Pinus. palustris - Longleaf Pine
Pinus. pungens - Table Mountain Pine
Pinus. rigida - Pitch Pine
Pinus. serotina - Pond Pine
Pinus. taeda - Loblolly Pine
Pinus. virginiana - Virginia Pine
Subsection Contortae
North America
Pinus. banksiana - Jack Pine
Pinus. contorta - Lodgepole Pine
Pinus. contorta - Lodgepole Pine
Lodgepole Pine, Scrub Pine, Coast Pine
Subsection Oocarpae
Central America, Mexico, western United States.
Pinus. attenuata - Knobcone Pine
Pinus. greggii - Gregg's Pine
Pinus. herrerae - Herrera's Pine
Pinus. jaliscana - Jalisco Pine
Pinus. lawsonii - Lawson's Pine
Pinus. muricata - Bishop Pine
Pinus. oocarpa - Egg-cone Pine
Pinus. patula - Patula Pine
Pinus. praetermissa - McVaugh's Pine
Pinus. pringlei - Pringle's Pine
Pinus. radiata - Monterey Pine
Pinus. tecunumanii - Tecun Uman Pine
Pinus. teocote - Ocote Pine
Subsection Ponderosae
Central America, Mexico, western United States, southwest Canada.
Subsection PONDEROSAE
The defining morphology: Branching candelabra-like, with upcurved branches, erect uninodal shoots with spreading leaves resembling a chimney sweep's brush. Symmetrical or slightly
oblique cones; cones mature in 18 months (22 in P. torreyana), open when ripe, and some cone basal scales remain on the branch after the cone has fallen (except in P. maximinoi, P.
gordoniana).
Pinus. apulcensis - Apulco Pine
Pinus. arizonica - Arizona Pine
Pinus. cooperi - Cooper's Pine
Pinus. coulteri - Coulter Pine
Pinus. devoniana - Michoacan Pine
Pinus. durangensis - Durango Pine
Pinus. engelmanii - Apache Pine
Pinus. estevezii - Estevez's Pine
Pinus. gordoniana - Gordon's Pine
Pinus. hartwegii - Hartweg's Pine
Pinus. jeffreyi - Jeffrey Pine
Pinus. maximinoi - Thinleaf Pine
Pinus. montezumae - Montezuma Pine
Pinus. ponderosa - Ponderosa Pine
species PONDEROSA
SPECIES PONDEROSA PINE
Ponderosa, Yellow Pine
Pinus. pseudostrobus - Smooth-bark Mexican Pine
Pinus. sabiniana - Gray Pine
Pinus. sabiniana PINE
DiggerPine, GrayPine
Pinus. torreyana - Torrey Pine
