Sarcaulus oblatus T.D.Penn.
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Authority
Pennington, Terence D. 1990. Sapotaceae. Fl. Neotrop. Monogr. 52: 1-750. (Published by NYBG Press)
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Family
Sapotaceae
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Scientific Name
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Type
Type. Ecuador. Morona-Santiago: N of Gualaquiza, Nov 1982 (fl, fr), Pennington & Tenorio 10768 (holotype, K; isotypes, NY, QCA).
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Description
Latin Diagnosis - Arbor; ramuli novelli initio minute adpresse puberuli, demum glabri, atro-brunnei, asperi vel squamati, lenticellis paucis grandibus. Folia dis-sita, altemantia et disticha vel leviter spiraliter disposita, 12-16.6 × 3.7-5.5 cm, elliptica usque anguste oblongo-elliptica, apice anguste attenuata vel acuminata, basi acuta usque anguste attenuata, chartacea, glabra; venatio eucamptodroma; nervus marginalis praesens; costa supra prominula (rotundata); nervi secundarii 10-13-jugi, leviter convergentes, arcuati; nervi inter-secundarii longi, saepe prope marginem extensi; nervi tertiarii reticulum laxum facientes. Petiolus 0.8-1.5 cm longus, leviter canaliculata, glaber. Fasciculi 5-usque multi-flori, axillares vel infra folia dispositi. Pedicellus (masculinus) 3-4 mm longus, (foemineus) 1.5-2 mm longus, subglaber. Flores unisexuales (planta dioica). Sepale 2.5-3 mm longa, ovata, apice acuta vel obtusa, sepala interiora extus adpresse puberula, intus glabra. Corolla (masculina) ca. 5 mm longa, (foeminea) ca. 3.5 mm longa; tubus fere lobos aequans; lobi quinque, late expansi, triangulares vel ovati, apice rotundati vel obtusi, glabri. Stamina quinque ad apicem tubo corollae affixa; filamenta ca. 0.5 mm longa, glabra; antherae ca. 1 mm longae, late lanceolatae, glabrae, in flore foemine nullae. Staminodia quinque 0.5-1 mm longa, ovata vel triangularia, glabra. Discus nullus. Ovarium ovoideum usque globosum, 4-5-loculare, minute adpresse puberulum; stylus post anthesin 1-1.5 mm longus, adpresse puberulus; styli capitulum 4-5-lobatum. Fructus 2.2-2.5 × 3-3.2 cm, oblatus, apice et basi subtruncatus, laevis, glaber. Semina 2-4, 1.7-1.8 cm longa, lateraliter compressa, apica acuta, basi rotundata, testa leviter rugosa, nitida, ca. 0.3 mm crassa; cicatrix adaxialis, per longtudinem extensa, prope apicem ca. 3 mm lata, ad basim decrescens; embryo cotyledonibus plano-convexis, liberis, radicula ad superficiem extensa; albumen nullum.
Species Description - Tree; young shoots minutely appressed puberulous at first, soon glabrous, dark brown, rough or scaling, with few large lenticels. Leaves spaced, alternate and distichous or weakly spirally arranged, 12-16.6 × 3.7-5.5 cm, elliptic to narrowly oblong-elliptic, apex narrowly attenuate or acuminate, base acute to narrowly attenuate, chartaceous, glabrous; venation eucamptodromous, marginal vein present, midrib slightly prominent (rounded) on upper surface, secondary veins 10-13 pairs, slightly convergent, arcuate; intersecondaries long, often extending to near the margin; tertiaries forming a lax reticulum. Petiole 0.8-1.5 cm long, slightly channelled, glabrous. Fascicles 5-many-flowered, axillary and below the leaves. Pedicel (male) 3-4 mm long, (female) 1.5-2 mm long, subglabrous. Flowers unisexual (plant dioecious). Sepals 2.5-3 mm long, ovate, apex acute or obtuse, inner sepals appressed puberulous on outer face, otherwise glabrous. Corolla (male) ca. 5 mm long, (female) ca. 3.5 mm long, tube about equalling the lobes, lobes five, widely spreading, triangular or ovate, apex rounded or obtuse, glabrous. Stamens five, fixed at the top of the corolla tube; filaments ca. 0.5 mm long, glabrous; anthers ca. 1 mm long, broadly lanceolate, glabrous, absent in female flowers. Staminodes five, 0.5-1 mm long, ovate or triangular, glabrous. Disk absent. Ovary ovoid to globose, 4-5-locular, minutely appressed puberulous; style 1-1.5 mm long after anthesis, appressed puberulous; style-head 4-5-lobed. Fruit 2.2-2.5 × 3-3.2 cm, oblate, apex and base subtruncate, smooth, glabrous. Seeds 2-4, 1.7-1.8 cm long, laterally compressed, apex acute, base rounded, testa slightly wrinkled, shining, ca. 0.3 mm thick; scar adaxial, full-length, ca. 3 mm wide near apex, tapering to base; embryo with plano-convex, free cotyledons, radicle extending to the surface; endosperm absent. Field characters. Tree to 25 m high and 50 cm diam., buttressed to 1 m; bole fluted, with buff-grey bark scaling in large, rather irregular pieces; slash pink with some white latex. Flowers with pale cream-white corolla, without scent. Fruit yellow, with copious white latex in the whitish flesh. Flowering Oct-Nov, fruit Nov.
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Distribution
Amazonian Ecuador, in lower montane rain forest, 700-1000 m altitude.
Ecuador South America| Morona-Santiago Ecuador South America| Zamora-Chinchipe Ecuador South America|