Ipomoea electrina D.F. Austin

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

publication ID

https://dx.doi.org/10.3897/phytokeys.143.32821

persistent identifier

https://treatment.plazi.org/id/61272D77-E009-97D8-F08B-0B5FF8075B2E

treatment provided by

PhytoKeys by Pensoft

scientific name

Ipomoea electrina D.F. Austin
status

 

294. Ipomoea electrina D.F. Austin View in CoL & J.A. McDonald, Novon 12: 29. 2002. (Austin and McDonald 2002: 29)

Exogonium luteum House , Bull. Torrey Bot. Club 35: 103. 1908. (House 1908a: 103), non Ipomoea lutea Hemsl. (1879) . Type. MEXICO. Oaxaca, Cuesta de Chiquihuetlan, C. Conzatti & J. González 668 (holotype GH00054448, isotype NY).

Ipomoea woronovii var. lutea (House) D.F.Austin , Taxon 32: 626. 1983. (Austin 1983: 626).

Ipomoea shinnersii D.F. Austin , Ann. Missouri Bot. Gard. 64: 337. 1977 [pub. 1978]. (Austin 1978a: 337). Type. Based on Exogonium luteum House , nom. illeg. “woronowii” should have been used.

Ipomoea crocea McPherson ex Breedlove , Listados Floríst. México 4: 75. 1986. (Breedlove 1986: 75), nom. nud.

Type.

Based on Exogonium luteum House

Description.

Perennial herb to 3 m, stems woody below, pubescent. Leaves petiolate, 4-10 × 1.5-7 cm, ovate, finely acuminate, adaxially pubescent, abaxially tomentellous; petioles 1.5-3.5 cm. Inflorescence of axillary cymes of 3-18 flowers; peduncles 1.5-5 cm, pubescent; bracteoles linear-lanceolate, 5-10 × 1 mm, somewhat persistent; secondary peduncles 1-1.5 cm; pedicels 1.5-3 cm, pubescent; sepals unequal, coriaceous, often verrucose basally, glabrous or pubescent, outer 4-6 × 3-4 mm, ovate-deltoid, acute, inner 6.5-9.5 × 4-5 mm, oblong-elliptic, obtuse to rounded, scarious marginally; corolla 5-6.5 cm long, hypocrateriform, yellow or orange, glabrous except apically, the cylindrical tube 4-6 mm wide, the limb deeply lobed, the lobes linear-oblong 15-23 × 2 mm, being more deeply lobed and spreading when mature, the apex comose; stamens exserted 5-10 mm. Capsules conical; seeds dark brown, long-pubescent.

Illustration.

Figures 8D View Figure 8 , 143 View Figure 143 .

Distribution.

Endemic to southern Mexico, where it grows in dry deciduous oak forest between 700 and 2100 m.

MEXICO. Chiapas: D.E. Breedlove 27626 (MICH, MO). Oaxaca: Hac. Monserrate, C.A. Purpus 9189 (MO, US); Nejapa de Medero, E. Martínez Luis 332 (IEB); San Miguel Suchixtepec, P. Tenorio et al. 18410 (MEXU); Cerro Marimba, Tehuantepec, C. Martínez 1035 (MEXU).

Note.

In Flora Mesoamericana, Austin et al. (2012) treated Exogonium luteum as a synonym of Ipomoea urbinei without reference to I. electrina but this appears to have been an error. The two species are somewhat similar and have been confused, Ipomoea electrina sometimes being treated as a variety of I. urbinei (Austin 1983) . Ipomoea electrina is distinguished by the orange or yellow corolla with long linear-oblong, spreading lobes which are comose at the apex.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Solanales

Family

Convolvulaceae

Genus

Ipomoea

Loc

Ipomoea electrina D.F. Austin

Wood, John R. I., Munoz-Rodriguez, Pablo, Williams, Bethany R. M. & Scotland, Robert W. 2020
2020
Loc

Ipomoea lutea

Hemsl. 1879
1879