(Berg) Niedenzu in Engler & Prantl, Nat. Pfl. 3 (7):69.1893
Guayabo de agua, Wild guavo
Small tree, nearly glabrous, to 9 (12) m tall; bark thin, reddish-brown, peeling in thin strips (similar to P. guajava); wood hard, fine-grained; branchlets with 4 thin narrow ribs, appearing square; young stems and petioles sometimes bearing fine, sparse pubescence. Leaves opposite or nearly so; petioles 3-6 mm long; blades oblong or elliptic, acuminate, obtuse to rounded at base, 4-12 cm long, 2.5-5 cm wide; major lateral veins in ca 8 pairs, faint above and prominulous below. Cymes axillary, of 1-3 flowers; peduncles 1-2.5 cm long; calyx closed and globose in bud with a short apiculum, 2- or 3-lobed when open, sometimes persisting in fruit, stiff, concave inside, ca 1 cm long; petals 5, orbicular, 1-1.5 cm long, white; stamens numerous; anthers oblong, dorsifixed, dehiscing longitudinally; ovary glabrous; stigma peltate. Berries ± globose, 3-6 cm diam, green to yellowish at maturity, white inside, with a tart, acidlike taste; seeds many, irregularly obovoid or reniform, 6-8 mm long, tan. Croat 16584.
Apparently uncommon as an adult, known only from the forest near Wheeler Trail 1300; seedlings common in some areas of the forest above the escarpment south of the Big Trees on Armour Trail. Probably flowering and fruiting all year.
Mexico to Panama. In Panama, known from tropical moist forest in the Canal Zone, Bocas del Toro, Chiriqui, and Panama.
See Fig. 425.