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Paleoenkianthus

Magnoliopsida - Ericales

Synonymy list
YearName and author
1993Paleoenkianthus Nixon and Crepet

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RankNameAuthor
kingdomPlantae
phylumSpermatophyta
classMagnoliopsidaCronquist et al. 1996
RankNameAuthor
EudicotDoyle and Hotton 1991
orderEricalesvon Berchtold and Presl 1820
genusPaleoenkianthus

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
K. C. Nixon and W. L. Crepet 1993Flowers (buds) bisexual, minute, 1.9 mm long x 1 mm wide. Calyx of ca. 5 imbricate sepals, baslly fused, the adaxial (inner) surface with an indumentum of slender curly unicellular trichomes, abaxial surface with cavities suggestive of bases of broken trichomes or glandular structures. Petals 5, valvate, connate toward the base, free in upper half. Ovary superior, 1.2 mm long x 0.5 mm wide, syncarpous, 4-carpellate, each carpel longitudinally fluted for its entire length and irregularly lobed near the base. Styles 4, slightly unequal, adnate for most of length, slightly curved; stigmas terminal, minute. Stamens 8, alternating with ridges formed by the fluted ovary, anther and filament well differentiated, the filaments terete, slender above and expanded at the bases. Anthers ca. 0.2 mm x 0.2 mm, strongly 2-lobed, tetrasporangiate, inverted and U-shaped, the filament attached between the two lobes at the base (pseudoterminal end). Awns 2-3 on each side at pseudoterminal end of anther, dehiscence apparently by pseudoterminal slits or pores. Pollen prolate, 16.2 x 12 micrometers, tricolporate with developed geniculi, and reticulate micromorphology. Pollen grains clumped, grains connected by threads similar in diameter and ornamentation to the muri and sometimes coalescent with them. Fruit a loculicidal capsule ca. 5-6 mm long x 3 mm wide, 4-valved, ovoid-ovate, subtended by persistent calyx. Seeds unknown.