The order Myrtales: circumscription, variation and relationships

Author(s): DahlgrenR, ThorneRF


Tree up to 12 m high; young shoots terete or slightly oval in transversal section, glabrous. Leaves opposite, decussate, simple, entire, coriaceous, more or less sessile when young, later shortly petiolate, elliptic to oblong; stipules rudimentary, marcescent. Inflorescence a multi floral, anthotelic panicle, mainly terminal. Flowers small, bisexual, actinomorphic, usually hexamerous, obhaplostemonous, with short hypanthium, slightly perigynous; sepals valvate, broad-based, triangular, and recurved at anthesis, persistent; petals white, distinct, narrowly clawed, with sub-orbicular lacerate lamina, thin, caducous, in bud hood-like, covering the anthers; stamens antepetalous, arising immediately below the petals on inner rim of hypanthium, incurved in bud; filaments more or less terete, longer than anthers; anthers sub-basi fixed, versatile, tetrasporangiate, introrse, longitudinally dehiscent; connective elliptical; disc 0; ovary superior, 2(-3)-carpellate, 2(-3)-locular, dorsiventrally compressed; style stout, shorter than ovary, basal part persistent; stigma capitate, papillate; ovules 15–20 per locule, bitegmic, anatropous, crassinucellate, superposed in a single vertical series per locule; placentation axile. Fruit a dorsiventrally compressed capsule, loculicidal at apex, reddish brown. Seeds depressedovoid, narrowly winged; seed coat thin and papery, rather smooth, brownish; embryo more or less flattened; cotyledons folded; endosperm 0.

Similar Articles

Bioactivity of essential oils and their volatile aroma components: Review

Author(s): ShaabanaHAE, El-Ghoraba AH, Shibamoto T

Composition and seasonal variation of the essential oil from leaves and peel of a cretan lemon variety

Author(s): Vekiari SA, Protopapadakis EE, Papadopoulou P,Papanicolaou D, Panou C, et al.

Volatile leaf oils of American Myrtaceae III

Author(s): Tucker AO, Maciarello MJ, Landrum LR

Chemical composition of the leaf essential oil of Psidium guajava L

Author(s): Chen HC, Sheu MJ, Lin LY, Wu CM

Chemical composition of essential oil of Psidium cattleianum var

Author(s): Chalannavar RK, Venugopala KN, Baijnath H, Odhav B

Morphological and Chemical Characterization of Psidium Species

Author(s): Sharma A, Sehrawat SK, Singhrot RS, Tele A

Monoterpene content in Origanum syriacum as affected by environmental conditions and flowering

Author(s): Dudai D, Putievsky E, Ravid U, Palevitch D, Halevy AH

Plant-Derived Antimalarial Agents: New Leads and Efficient Phytomedicines

Author(s): Batista R, de Jesús Silva JúniorA, de OliveiraAB