Silene section Sordidae K. Yıldız & Toprak, 2022

Toprak, Zeynep & Yildiz, Kemal, 2022, Conflicting signals in phylogenetic relationships and taxonomy of Anatolian endemic Silene sordida (Caryophyllaceae), Phytotaxa 548 (2), pp. 199-222 : 211

Silene section Sordidae K. Yıldız & Toprak , sect. nov.

Type:— Silene sordida Hub. -Mor. & Reese.

Diagnosis:—Stem up to 60 cm tall, basal leaves 25–42 × 10–17 mm, inflorescence very lax dichasium, cyme, calyx teeth thin and tall, 2.5–4.0 mm, petals pink to whitish, coronal scales 1–2 mm long, obliquely bidentate acute, anthophore 4–5 mm long, slightly rough, glabrous, seed globose to subglobose, surface flat, rounded at back, testa cells margin undulating, without tubercles, hilum prominent, pollen pore number 28–33.

Description:—Annual, stem erect, glandular pubescent. Basal leaves spathulate to oblanceolate, cauline leaves ellipsoid to lanceolate; inflorescence a lax dichasial cyme; calyx nerves inconspicuous, crisped unicellular and sparsely glandular pubescent, inflated in fruit; alar flowers erect, distinctly pedicellate, petals limb white to pinkish, rectangular, limb apex approximately 0.5 mm emarginate, coronal scales 1–2 mm long; capsule ovoid–spheroid, included in the calyx; anthophore 4–5 mm glabrous; seeds globose to subglobose, hilum prominent. Pore number of pollen grains 28–33.

Distribution:—Southwest Anatolia.

Key to the sections:—A proposed diagnostic key follows:

1. Inflorescence a monochasium with occasional dichasial branching at base ............................................................. Dipterospermae

1. Inflorescence very lax or asymmetric or compound dichasium.........................................................................................................2

2. Anthophore pubescent ................................................................................................................................................... Cryptoneurae

2. Anthophore glabrous ..........................................................................................................................................................................3

3. Basal leaves rhombic-spathulate ............................................................................................................................................. Atocion

3. Basal leaves spathulate to oblanceolate................................................................................................................................. Sordidae

Key to the species of sect. Sordidae :—A proposed diagnostic key follows:

1. Calyx 5–9 mm; anthophore 1–2 mm ................................................................................................................................. S. insularis

1. Calyx more than 10 mm; anthophore more than 2 mm ......................................................................................................................2

2. Anthophore glabrous, petal limb apex recessed, hilum region of seed prominently protruding......................................... S. sordida

2. Anthophore hairy, petal limb apex not recessed, rhomboid, rounded or emarginate, hilum region of seed circular or rectangular.... ............................................................................................................................................................................................................3

3. Petal limb apex rhomboid; hilum region of seed circular .................................................................................................. S. ertekinii

3. Petal limb apex rounded or emarginate; hilum region of seed rectangular or circular ......................................................................4

4. Anthophore at least 4 mm; hilum region of seed rectangular with two opposite sides twisted .................................. S. cryptoneura

4. Anthophore less than 4 mm; hilum region of seed more or less circular, not twisted.................................................. S. salamandra