Egg-Cone Pine ( Pinus oocarpa Schiede)

摘要: Pinus oocarpa Schiede belongs to the closed-cone pine group (Oocarpae) of Central American region that contains four other closely related species (Barnes and Styles 1983). The is known by a number descriptive common names, including pino ocote, colorado (Robbins 1983), egg-cone (Rushforth 1987). Its gross morphology typical (Fig. 1). tree grows height 12 18 min its native habitat (Anonymous 1962), achieving diameter 75 cm. Exceptional sites can produce trees 45 m tall 1 in girth at breast Fascicles contain needles mostly groups five, sometimes three or four, rarely six (Styles et al. 1982; Loock 1977). Female cones are borne up three, being ovoid ovoid-conic (egg-shaped) when closed, generally persistent on after maturity 1982). Robbins (1983) describes tree’s form as “...generally good, with straight bole moderate light branching habit growing stands, crown forming /4 1/3 height. Open grown have large, deep crowns fairly coarse branching.” Young will sprout from root collar (Greaves 1982) higher 1983) injury fire grazing. Stem kill may occur repetitively over several seasons because frequent fires. Repetitive coppicing until absence allows grow more fire-tolerant size (Chable 1967).