Acanthaceae (PDF)

ACANTHACEAE 4036 × 1.2–1.5 mm. Corolla violet blue, ca. 3.5 cm, slightly curved,outside glabrous, inside glabrous except for trichomes retainingstyle; tube basally cylindric and narrow for ca. 7 mm then graduallywidened to ca. 1 cm at mouth; lobes oblong-ovate, ca. 7 ×6 mm, apex emarginate. Stamens 4, included; filaments hirsute,shorter pair ca. 2.2 mm, longer pair ca. 5 mm; anther thecae oblong,ca. 2 mm; pollen type 3. Ovary ellipsoid, ca. 3 mm, glabrous;style ca. 1.8 cm, sparsely gland-tipped pubescent. Capsuleoblong, 1.5–1.8 cm, gland-tipped pubescent at tip, 4-seeded. Seeds ovate in outline, ca. 3 × 2 mm, convex, denselypilose; areola small, glabrous. Fl. Oct–Jan.Thickets on mountain slopes; 1300–1600 m. Yunnan (Gongshan)[Myanmar].Strobilanthes longispica is very close to S. dryadum, differingonly in its lanceolate rather than ovate-oblong bracts, unwinged inflorescencerachis, and less dense inflorescence indumentum.45. Strobilanthes dryadum Benoist, Bull. Mus. Natl. Hist.Nat. 28: 94. 1922.林 马 蓝 lin ma lanPteracanthus dryadum (Benoist) C. Y. Wu & C. C. Hu.Herbs to 1 m tall, much branched, nearly isophyllous.Stems 4-angled, sulcate, bifariously pubescent. Petiole 1–3 cm,sulcate, bifariously pubescent; leaf blade ovate to lanceolate, to25 × 8 cm, glabrous, abaxially pale, secondary veins 6 or 7 oneach side of midvein, base attenuate and decurrent onto petioleforming wings, margin crenate-dentate, apex acuminate. Inflorescencesterminal, spikes, 3–6 cm, with 2–6 flower pairs;rachis pubescent with gland-tipped trichomes, winged, wing ca.1 mm; bracts ovate-oblong, 4–7 × 1–2 mm, persistent, glandtippedpubescent, apex obtuse; bracteoles oblong, ca. 4 × 0.5mm, gland-tipped pubescent. Flowers distant on rachis, usuallyone sterile per node. Calyx 1–1.5 cm, accrescent in fruit, outsidegland-tipped pubescent, 2-lipped; lower lip 2-lobed almostto base; upper lip 3-lobed to below middle, lobes linear-oblongand 11–15 × 1–2 mm. Corolla blue, outside glabrous, insideglabrous except for trichomes retaining style; tube basally cylindricand ca. 2 mm wide for ca. 8 mm then gradually widenedto ca. 1 cm at mouth; lobes oblong, ca. 8 × 8 mm. Stamens 4,included; filaments hirsute, shorter pair ca. 4 mm, longer pairca. 6 mm; anther thecae oblong, ca. 2 mm; pollen type 4. Ovarypuberulent at tip; style ca. 2.2 cm, sparsely pilose; stigma linear,compressed. Capsule narrowly oblong-obovoid, 1–1.2 cm, apicallygland-tipped pubescent, 4-seeded. Seeds pilose; areolasmall. Fl. May, Sep–Nov, fr. Jan–Mar.● Moist places in forests; 1300–2500 m. Guangxi, Yunnan.46. Strobilanthes adpressa J. R. I. Wood, Kew Bull. 58: 110.2003.紧 贴 马 蓝 jin tie ma lanSubshrubs to 2 m tall, anisophyllous. Stems somewhatsulcate, bifariously pilose with large-celled trichomes, eventuallyglabrescent, basally woody; nodes pustulose, pubescent.Leaves basally petiolate, apically sessile; petiole (0–)1–2.5 cm,sulcate, sparsely pilose; leaf blade ovate-elliptic, (4–)6–16 ×(1–)3.5–8.5 cm, smaller of pair ca. 2/3 size of larger one, thinlyleathery, both surfaces villous with large-celled trichomes especiallyon veins, secondary veins 9–13 on each side of midvein,curved, and netted near margin, base decurrent onto petioleor those apically on stem amplexicaul, margin shallowlyserrate, apex acuminate. Inflorescences terminal, spikes, 5–7cm; rachis 4-angled, gland-tipped pilose; bracts somewhat imbricate,oblong, 1.1–1.7 × 0.5–0.7 cm, gland-tipped pilose,tardily deciduous as flowers open; bracteoles linear-oblong, 9–15 × 1.2–2 mm, persistent, abaxially gland-tipped pilose, apexacute. Flowers arranged in pairs, erect, ± appressed to rachis.Calyx 1.2–1.6 cm, 2-lipped; lower lip 2-lobed almost to base;upper lip 3-lobed, lobes 12–14 × ca. 1.5 mm. Corolla yellow orblue, outside glabrous, inside glabrous except for trichomesretaining style; tube basally cylindric, ca. 2.5 mm wide for ca.1.5 cm then gradually ventricose and widened to ca. 1.5 cm atmouth, strongly bent ca. 2.5 cm above base; lobes ovate, ca. 6 ×5 mm, apex obtuse. Stamens 4, included; filaments sparselypilose, shorter pair ca. 4 mm, longer pair ca. 8 mm; antherthecae oblong, ca. 4 × 1.5 mm. Ovary comose with shortlystipitate glands; style ca. 2.5 cm, pilose. Capsule not seen. Fl.Oct–Dec.Streamsides in forests; 1500–1800 m. Yunnan (Maguan) [Vietnam].47. Strobilanthes atroviridis Y. F. Deng & J. R. I. Wood, J.Trop. Subtrop. Bot. 18: 480. 2010.景 东 马 蓝 jing dong ma lanSubshrubs to 3 m tall, isophyllous or slightly anisophyllous,blackish green when dry. Stems branched, 4-angled, sulcate,glabrous, densely covered with white prominent cystoliths;nodes pustulose, pubescent. Petiole 2–5 cm, bifariouslypubescent; leaf blade ovate-elliptic, 9–22 × 5.5–14 cm, abaxiallypaler green and glabrous, adaxially green, subglabrous withsparse large-celled trichomes, and sparsely covered with prominentcystoliths especially along veins, secondary veins 6–10 oneach side of midvein, prominent on both surfaces, curved, andnetted near margin, tertiary veins conspicuous, base decurrentonto petiole, margin crenulate, apex acute to long acuminate.Inflorescences axillary, shortly pedunculate spikes, 1–3(–6) cm,2(–8)-flowered but commonly reduced to a subcapitate flowerpair; rachis gland-tipped pubescent; bracts linear-lanceolate, 9–14 × 2–3 mm, abaxially gland-tipped pubescent, adaxially glabrous;bracteoles linear-lanceolate, 9–13 × ca. 2.5 mm, abaxiallygland-tipped pubescent, adaxially glabrous. Flowers paired.Calyx 1–1.5 cm, outside gland-tipped pubescent, inside glabrous,2-lipped; lower lip 2-lobed almost to base, lobes linearlanceolate,9–14 × 2–3 mm, and apex acute; upper lip with 3lanceolate 5–7 mm teeth connate for 4–7 mm. Corolla purplishblue, 3–4 cm, straight, outside glabrous, inside glabrous exceptfor trichomes retaining style; tube ca. 2 mm wide at base thengradually widened to ca. 2 cm at mouth; lobes ovate, ca. 1 × 1cm, apex emarginate. Stamens 4, included; filaments basallypubescent, shorter pair ca. 6 mm, longer pair ca. 8 mm; antherthecae oblong; pollen type 3. Ovary not examined; style ca. 2cm, glabrous. Capsule not seen. Fl. Apr, Jun, Nov.● Moist places in forests; 2100–2400 m. Yunnan (Jingdong).