Scolopia Schreb.
Creators: name: Applequist, Wendy L.
name: Schatz, George E.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Salicaceae
Scolopia

description: KEY TO THE MALAGASY SPECIES OF <i>SCOLOPIA</i> SCHREB. 1. Shrub or small tree, usually spiny; inflorescences 1-flowered; W, S, or extreme N or SE Madagascar, in dry to transitional forests or bush.......................................................................................................................... 2 — Tree or seldom a large shrub, never spiny; inflorescences few- to several-flowered; E to extreme N or SE Madagascar, usually in humid or littoral forests.................................................................................................... 6 2. Ovary pubescent; glandular disk virtually absent; extreme SE and SW...... 8. <i>S. meridionalis</i> Capuron &amp; Sleumer — Ovary glabrous; glandular disk present, with small inconspicuous glands.................................................... 3 3. Spines few or absent; leaves (2-)3-6(-8) cm, elliptical to subovate, the apex short-acuminate to subacute; NW Madagascar............................................................................................ 5. <i>S. inappendiculata</i> H.Perrier — Spines usually present; leaves 1-2.5 cm, obovate to oblanceolate-oblong or suborbicular, the apex obtuse and often crenate; S or extreme N Madagascar................................................................................................... 4 4. Leaves sometimes suborbicular; secondary veins 2-4 pairs, more conspicuous than tertiary veins, usually slightly curving and forming relatively broad angle with midrib; abaxial surface of sepals glabrous; S Madagascar....................................................................................................................... 12. <i>S. spinescens</i> Sleumer — Leaves always much longer than broad; secondary veins several pairs, very fine, straight and forming a narrow angle with midrib; abaxial surface of sepals minutely pubescent; extreme N Madagascar............................. 5 5. Leaves narrowly oblong-obovate to oblong-oblanceolate, (3-)4-6(-8) mm wide; stamens 40-60............................................................................................................................ 11. <i>S. septentrionalis</i> Capuron &amp; Sleumer — Leaves obovate, 7-12 mm wide; stamens 80-120...................................... 1. <i>S. calcicola</i> Capuron &amp; Sleumer 6. Adaxial surface of sepals and petals appressed-puberulent; perianth strongly accrescent in fruit; N Madagascar.......................................................................................................................... 7. <i>S. manongarivae</i> H.Perrier — Adaxial surface of sepals and petals glabrous; perianth slightly or not accrescent.......................................... 7 7. Leaves variable in shape and size, at maturity usually&gt; 6.5 cm long except in <i>S. delphinensis</i>, sp. nov. (where smaller leaves are common); pedicels&gt;(3-) 4.5 mm long in flower,&gt; 4.5 mm long in fruit; stamens 80-100 or more.... 8 — Leaves relatively small, at maturity &lt;6.5 (in <i>S. montana</i> to 7.5) cm long; pedicels &lt;3 mm long in flower, &lt;4.5 mm (very rarely to 8 mm) long in fruit; stamens 20-50(-60)............................................................................ 11 8. Leaves narrowly elliptical to narrowly oblong-elliptical or oblanceolate (rarely elliptical), (2.5-)3.5-7.3(-9.3) × 1.3-2.9(-4.7) cm, with petiole 3-6(-8) mm long; apex acute to rounded (rarely obtuse or cuspidate); endemic to extreme SE near Fort-Dauphin...................................... 2. <i>S. delphinensis</i> Appleq. &amp; G.E.Schatz, sp. nov. — Leaves elliptical to oblong-elliptical, sometimes somewhat obovate, or broadly elliptical, usually with most leaves&gt; 7.3 cm long or&gt; 2.9 cm wide, if smaller then with petiole at least 6 (rarely 5) mm long; apex variable, sometimes acuminate; widely distributed.................................................................................................... 9 9. Leaves elliptical to broadly elliptical, (5.2-)7.5-12.4(-14) × (3.2-)3.8-7.7(-9.6) cm, usually less than twice as long as broad; apex cuspidate (rarely rounded or emarginate); base convex, usually broadly so, to rounded; littoral forests.............................................................................................................. 6. <i>S. madagascariensis</i> Sleumer — Leaves elliptical to oblong-elliptical or narrowly elliptical (to somewhat obovate), normally &lt;11.5 cm long and more than twice as long as broad; apex variable, often mostly acuminate or mostly rounded; base convex, usually acutely (infrequently cuneate to attenuate).......................................................................................... 10 10. Leaves usually drying brown (rarely green, mostly from near-coastal habitats); apex acuminate to long-cuspidate (rarely to obtuse or rounded); usually low- to mid-elevation humid forests, rarely coastal........... 4. <i>S. hazomby</i> H.Perrier — Leaves normally drying pale, greenish to olive or gray-green; apex rounded to obtuse (infrequently cuspidate, emarginate); littoral and sublittoral forests................................................................ 10. <i>S. orientalis</i> Sleumer 11. Leaves ovate to elliptical (lanceolate) with a usually long-caudate apex and rounded base.... 14. <i>S. thouvenotii</i> H.Perrier — Leaves variable in shape, but not primarily ovate nor with a caudate apex................................................. 12 12. Leaves broadly elliptical (to elliptical or slightly ovate or obovate), usually less than twice as long as broad; apex rounded (obtuse, emarginate); base convex and obtuse (to round)....................... 13. <i>S. taimbarina</i> H.Perrier — Leaves obovate (to oblanceolate) or narrowly oblong to oblanceolate-oblong, usually at least twice as long as broad; apex mostly short-cuspidate or mostly rounded; base cuneate (to attenuate)................................... 13 13. Leaves obovate (to oblanceolate), (1.7-)2.5-5.3(-6) × (0.9-)1.2-2.3(-3.2) cm, with apex usually rounded (to somewhat obtuse or emarginate); littoral and sublittoral forests............................ 3. <i>S. erythrocarpa</i> H.Perrier — Leaves narrowly oblong to oblanceolate-oblong, 3.5-7.5 × 1.4-3 cm, with apex short-cuspidate to rounded (seldom obtuse); low- to moderately high-elevation humid forests.............................. 9. <i>S. montana</i> Sleumer
description: Published as part of <i>Applequist, Wendy L. &amp; Schatz, George E., 2016, A synoptic revision of the Malagasy species of Scolopia Schreb. (Salicaceae, Scolopieae), pp. 99-115 in Adansonia 38 (1)</i> on page 101, DOI: 10.5252/a2016n1a6, http://zenodo.org/record/4598915