Pinus nigra ‘Arnold Sentinel’ (Austrian pine)

Austrian pines were introduced to the United States 1759. This cultivar was developed for landscaping use as a tall, narrow, columnar tree.

Leaves: Needles are in clusters of two, 4″ (10 cm) long, stiffer and denser than those of red pines.

Fruits: Inconspicuous flowers occur for a short time in April or May. Male flowers are clusters of orange-yellow catkins, while female flowers are small yellow-green conelike structures. Cones are up to 3″ (7.6 cm) long, and pale brown or yellow brown in color.

Kingdom	Plantae	Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin)
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Coniferophyta	Conifers—cone-bearing trees (and a few shrubs)
Class	Pinopsida	Gymnosperms such as cedars, Douglas-firs, cypresses, firs, junipers, kauri, larches, pines, hemlocks, redwoods, spruces, and yews
Order	Pinales	Cone-bearing plants: cedar, cypress, fir, juniper, larch, pine, redwood, spruce, yew, and others
Family	Pinaceae	Pine family: cedars, firs, hemlocks, larches, pines and spruces
Genus	Pinus	Latin for “pine”
Species	nigra	“Black” (not sure why though)

About plant names...