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Paleoenkianthus
Taxonomy
Paleoenkianthus was named by Nixon and Crepet (1993). Its type is Paleoenkianthus sayrevillensis.
It was assigned to Ericales by Nixon and Crepet (1993).
It was assigned to Ericales by Nixon and Crepet (1993).
Species
P. sayrevillensis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1993 | Paleoenkianthus Nixon and Crepet |
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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.
G. †Paleoenkianthus Nixon and Crepet 1993
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†Paleoenkianthus sayrevillensis Nixon and Crepet 1993
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. C. Nixon and W. L. Crepet 1993 | Flowers (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. |