Ipomoea microdactyla Griseb.

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

198. Ipomoea microdactyla Griseb. , Cat. Pl. Cub. 204. 1866. (Grisebach 1866: 204)

Exogonium microdactylum (Griseb.) House , Bull. Torrey Bot. Club. 35 (3): 102. 1908. (House 1908a: 102).

Ipomoea repanda var. microdactyla (Griseb.) D. Powell, J. Arnold Arbor. 60(2): 259. 1979. (Powell 1979: 259).

Ipomoea fuchsioides Griseb. var. glabra Griseb. , Cat. Pl. Cub. 205. 1866. (Grisebach 1866: 205). Type. CUBA. C. Wright [134] 1865 (holotype GOET 005701).

Ipomoea repanda var. pratensis C. Wright ex Griseb. , Cat. Pl. Cub. 204. 1866. (Grisebach 1866: 204). Type. CUBA. C. Wright s.n. (holotype GOET 005699, isotypes GH, K, YU).

Ipomoea repanda var. undulata C. Wright ex Griseb. , Cat. Pl. Cub. 204. 1866. (Grisebach 1866: 204). Type. CUBA. C. Wright s.n. (holotype GOET 005698).

Exogonium microdactylum var. integrifolium House , Bull. Torrey Bot. Club. 35 (3): 103. 1908. (House 1908a: 103). Type. CUBA. C. Wright 3102[1654] (possible holotype NY00111066, isotype K).

Ipomoea beyeriana Urb. , Symb. Antill. 9: 425. 1925. (Urban 1925: 425). Type. CUBA. Pinar del Río, km 13 on highway to Coloma, E.L. Ekman 18234 (holotype S07-4420).

Type.

CUBA. C. Wright 3094[1655] (holotype GOET 002497, isotypes BM, GH, HAC, K, MO, NY, S, US, YU).

Description.

Twining perennial herb with tuberous rootstock, apparently lacking white latex, stems glabrous, pale brown, somewhat woody. Leaves petiolate, polymorphic, 1-4 × 0.5-2.5 cm, usually broadly to narrowly deltoid, shortly acuminate, mucronate, basally truncate to subcordate, sometimes 3-5 lobed with lobes ± oblong, margin often undulate and sublobed, glabrous, abaxially paler and often with prominent veins; petioles 1-2.7 cm. Inflorescence of solitary or paired (rarely twice paired to 4 or more and becoming subracemose) pedunculate flowers; peduncles 1-2 (- 4.5) cm; bracteoles caducous, not seen; secondary peduncles 5-10 mm; pedicels 5-15 mm; sepals slightly unequal, glabrous with broad scarious margins, coriaceous, outer 5 mm, obovate-suborbicular, rounded, inner 6 mm, broadly oblong-obovate; corolla 3.5-4 cm long, red, glabrous, tube subcylindrical but slightly widened upwards, often curved, limb c. 3.5 cm, diam., shallowly lobed; stamens exserted. Capsules ovoid, 5-12 × 5-10 mm, shortly rostrate, glabrous; seeds 6 × 3-4 mm, pilose with long hairs up to 10 mm.

Illustration.

Figure 94E ; Acevedo-Rodríguez (2005: 172).

Distribution.

Common in dry woodland and secondary scrub in the Bahamas and Cuba and with isolated populations in Florida and on Mona Island, Puerto Rico.

UNITED STATES. Florida: Rugel s.n. (BM); J.K. Small et al. 6452 (S), 7943 (S); Dade Co, L.J. Brass s.n. (ARCH).

BAHAMAS. Acklins Island, H.F.A. von Eggers 3965 (BM, K); Andros: J.I. & A.R. Northrop 394 (K, NY); ibid., J.K. Small & J.J. Carter 8752 (K, NY). Grand Bahama: W.H. Lewis 7176 (MO). Berry Island: N.L. Britton & C.F. Millspaugh 2336 (NY). Governor Harbour: N.L. Britton & C.F. Millspaugh 5504 (NY). New Providence: A.H. Curtiss 211 (K, MO, NY). San Salvador: D.S. Correll & D.C. Wasshausen 46862 (NY). Watlings Island: P. Wilson 7212 (K, NY).

TURKS & CAICOS ISLANDS. Middle Caicos, B.J. Pollard et al. 1354 (K); Salt Cay, B.N. Manco et al. 419 (K); North Caicos, D.S. Correll 49469 (NY); P. Wilson 7716 (K, NY); South Caicos: D.S. Correll 49280 (MO, NY).

CUBA. Camagüey: N.L. Britton et al. 13253 (NY). Cienfuegos: Castillo de Jagua, R. Combs 609 (K). Guantánamo: Fisherman’s Point, N.L. Britton et al. 2107 (NY). Isla de Juventud (Pinos): N.L. Britton et al. 14288 (NY). La Habana: Mayabeque, Bro. Alain 1963 (NY). Matanzos: Conabi, Bro. León 13126 (NY). Pinar del Río: J.A. Shafer 11777 (MO). Santiago de Cuba: M. López Figueiras 909 (HAJB). Villa Clara: Bro. León 11350 (NY); A. Luna 802 (NY).

PUERTO RICO. Mona Island: R.O. Woodbury et al. M81 (NY).

Notes.

Wright 3094, Shafer 2607 from Camaguey and sine data from Bahamas (K) have 3-5 lobed leaves. Other specimens have entire leaves.

Ipomoea beyeriana is only known from the type. We believe it is an entire-leaved form of I. microdactyla Griseb. , based on the leaf shape and the reddish sepals. Urban (1925: 425) suggested an affinity with Ipomoea fuchsioides and it is not unlike the type of I. fuchsioides var. glabra and is an even better match for Wright 3102, the type of Exogonium microdactylum var. integrifolium House. (Wood and Scotland 2017c).

Figures

Figure 94. Photographs of Ipomoea species. A-C Variation in I. bonariensis A form with laciniate leaves B form with digitately lobed leaves C form wth ovate, cordate leaves D I. carolina E I. microdactyla. A, B Hector Keller C Beth Williams D, E Ramona Oviedo.