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Pinus remota (Little) D. K. Bailey & F. G. Hawksworth식물/들꽃-소나무과(Pinaceae) 2024. 10. 9. 15:33
국표에 없다.
Shrubs, or small trees 9 m tall and 40 cm dbh, with a contorted, low-forking trunk of spreading branches. Bark an mature trees thick, rough, scaly, exfoliating in thin scaly plates, or longitudinally furrowed; dark gray. Twigs rough with prominent, non-decurrent pulvini, which leave circular scars after fascicles have fallen. Cataphylls 5 mm long, subulate, reflexed, gray. Vegetative buds ovoid-cylindric, terminal bud 5-7 mm long, acute, not or slightly resinous. Fascicle sheaths initially 5 mm long, soon caducous, not recoiling to form a rosette. Leaves in fascicles of 2(-3), persisting 4-5 years, slightly curved to falcate, stiff, (2-)3-4.5(-5.5) cm long, 0.8-1.1 mm thick; apex acute-acuminate; abaxial face dull light green or yellowish green; adaxial face(s) slightly glaucous; stomata on all faces of the leaves. Pollen cones ovoid, 4-5 mm long, pink or purplish, maturing light yellow. Seed cones solitary or in pairs on 5-8 mm long, slender, curved peduncles, maturing in two years. Mature cones subglobose, (2-)2.5-4 × 3-6 cm when open. Seed scales opening widely, loosely attached to the rachis, irregularly shaped, with incurved margins and 1-2 deep seed cavities. Apophysis prominently raised, transversely or radially keeled, irregularly rhombic to pentagonal in outline; upper margin angular and irregular; color (lustrous) light brown to reddish brown. Umbo dorsal, flat or indented, with a minute, deciduous prickle. Seeds obovoid-angular, 12-16 mm long, light reddish brown with a grey tinge; integument very thin, 0.1-0.4 mm; endosperm white. Seed wings vestigial, remnants remain on the scale when the seeds are dispersed (Farjon 2010).
Pinus remota (Texas pinyon) description - The Gymnosperm Database (conifers.org)
https://youtu.be/W4pzUvYVXdg?t=1021
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