Ipomoea aemilii ( O'Donell )

Wood, John R. I., Munoz-Rodriguez, Pablo, Williams, Bethany R. M. & Scotland, Robert W., 2020, A foundation monograph of Ipomoea (Convolvulaceae) in the New World, PhytoKeys 143, pp. 1-823 : 1

6. Ipomoea aemilii ( O'Donell) J.R.I. Wood & R. Degen, Kew Bull. 71, 25: 3. 2016. (Wood et al. 2016b: 3)

Ipomoea malpighipila var. aemilii O'Donell , Arq. Mus. Paranaense 9: 228. 1952. ( O’Donell 1952: 228). Type. PARAGUAY. Alto Paraná, 1909/10, K. Fiebrig 5684 (holotype SI001300, isotypes G? n.v., GH, LIL, SI, US).

Ipomoea aurita Hassl. , nom. nud., Add. Plantae Hasslerianae 18. 1917. (Hassler 1917: 18).

Type.

Based on Ipomoea malpighipila var. aemilii O'Donell

Description.

Perennial of a pale green colour from a woody xylopodium; stems erect to 1 m high, apparently unbranched, densely hirsute with somewhat rough mostly appressed hairs. Leaves sessile, 16-27 × 0.4-0.8 cm, narrowly oblong, slightly narrowed to a cuneate base, apex obtuse and mucronate, coarsely tomentose on both surfaces, abaxially prominently 3-5-veined. Inflorescence terminal, rather short and dense <7 cm long, formed of (1-)3-flowered cymes in the axils of leaf bracts; bracts 2-6.5 cm long, diminishing in size upwards, apparently deciduous and absent from uppermost cymes; peduncles 2-4 mm, relatively stout, densely hirsute; bracteoles c. 3 × 0.5 mm, lanceolate, acuminate, almost hidden by the indumentum; pedicels 5-7 mm, densely hirsute; sepals 7-8 × 4-5 mm, broadly elliptic, densely hirsute, slightly unequal, outer obtuse, inner rounded to retuse with glabrous, scarious margins; corolla 4-5 cm long, pink, funnel-shaped, densely pubescent on mid-petaline bands, limb 2.5-3 cm diam. Capsules glabrous; seeds not seen.

Illustration.

Figure 13 .

Distribution.

Endemic to Paraguay. In sabanas in the area north of Hernandarias, especially in the Reserva Tatí Yupí.

PARAGUAY. Alto Paraná: Reserva Tatí Yupí, Itaipú Binacional 1046 (MO); G. Caballero Mamori 1423 (CTES); Com. Puerto Palma, C. Romero Pereira 14 (SCP); Pirá Pytá, A. Schinini et al. 18152 (CTES).

Note.

Distinguished from Ipomoea malpighipila by the simple leaves and distinct indumentum.

Figures

Figure 13. Ipomoea aemilii. A habit B stem base C leaf surface D leaf apex E flower bud F outer sepal G inner sepal. Drawn by Rosemary Wise A from Itapu Binacional 1046; B-G from Fiebrig 5684.