Jacquemontia sphaerostigma (Cav.) Rusby

Pastore, Mayara, Moreira, André Luiz da Costa, Cavalcanti, Taciana Barbosa & Simão-Bianchini, Rosângela, 2017, A taxonomic study of Jacquemontia evolvuloides (Moric.) Meisn. and related species (Convolvulaceae), Adansonia 39 (2), pp. 149-166 : 164

7. Jacquemontia sphaerostigma (Cav.) Rusby

( Fig. 8E, F )

Bulletin of the Torrey Botanical Club 26: 151 (1899). — Convolvulus sphaerostigma Cav. , Icones et Descriptiones Plantarum 5: 54. pl. 481 (1799). — Jacquemontia hirsuta Choisy , Mémoires de la Société de Physique et d’Histoire naturelle de Genève 8: 141 (1838), nom. illeg.

— Type: Mexico: “ Habitat in Mindanao, floret Decembri ; et in diversorio vulgo del Alto Camaron Regni mexicani ubi floret April et Maio. Vidi siccum in eodem herbario.” Nee s.n. (holo-, MA [ MA222550 ] photo! ; iso-, F [ F0054761F ] photo!) .

Convolvulus apocynoides Schltdl. & Cham. , Linnaea 5: 117 (1830).— Jacquemontia apocynoides (Schltdl. & Cham.) Urb. , Symbolae Antillanae 8: 560 (1921).

— Type: Mexico, Vera Cruz, 1.X.1828, C.J.W. Schiede & F.Deppe s.n. (holo-, HAL [ HAL0098217 ] photo!) .

Convolvulus coeruleus Martens & Galeotti , Bulletin de l’Académie royale des Sciences et Belles-Lettres de Bruxelles 12: 254 (1845).

— Lectotype (designated by McDonald 1993): Oaxaca, Cordillera , 1840, H.G. Galeotti 1359 (lecto-, BR [ BR0000006991944 ] photo! ; isolecto-, BR[BR0000006992279], G [ G00227335 ] photo!; K[K000613052]!; P[P00723272]!)

Jacquemontia evolvuloides var. brevipedunculata Meisn. , in Martius, Flora Brasiliensis 7: 307 (1869).

— Type: Brazil, Minas Gerais, Lagoa Santa , 25.IV.1865, E.Warming s.n. (holo-, BR[BR0000005793884] photo! ; iso-, P[P00723268]!) .

Jacquemontia hirsuta var. trichodonta Meisn. , in Martius, Flora Brasiliensis 7: 299 (1869).

— Type: Brazil, Minas Gerais, 1840, P. Claussen 71 (lecto-, BR[BR0000005793228] photo!) ; Brazil, Minas Gerais, Barbacena, 24.VI.1863, E.Warming s.n. (lectosyn-, BR[BR0000005795734] photo!) .

Jacquemontia hirsuta var. pohlii Meisn. , in Martius, Flora Brasiliensis 7: 299 (1869).

— Type: Brazil, 1939, J.B.E. Pohl (holo-, BR[BR0000005793556] photo! ; iso-, F[F0054950F] photo!, M[M0184718] photo!) .

Jacquemontia hirsuta var. pohlii Meisn. f. racemosa Chodat & Hassl. , Bulletin de l’Herbier Boissier ser. 2, 5: 697 (1905).

— Type: Paraguay, “ Cerros de Paraguay ”, XII.1900, E. Hassler 6515 (holo-, G ; iso-, GH[GH00054639] photo!, P[P03867995 ( Fig. 10 ), P03536031]!, UC[UC944287] photo!) , syn. nov.

Jacquemontia hirsuta var. adenotricha Hassl. , Repertorium Specierum Novarum Regni Vegetabilis 9: 193 (1911).

— Type: Paraguay, “pr. Flumen Jejui Guazú ” XII.1898, E. Hassler 5694 (syn-, G, K [ K000613128 ]!) ; Paraguay, Concepción, Villa-Sana “zwischen Rio Apa und Rio Aquidaban ”, 21.I.1909, K. Fiebrig 4663 (syn-, G, K [ K000613129 ]!) .

Jacquemontia viscidulosa Hoehne , Anexos das Memórias do Instituto Butantan, Seção de Botânica 1: 51. pl. 7 (1922).

— Type: Brasil, Mato Grosso, Porto Esperança, IX.1914, J.G.. Kuhlmann 1272 (holo-, SP [SP000697]! ; iso-, R[R000027509]!) .

Jacquemontia agricola Rusby , Memoirs of the New York Botanical Garden 7: 337 (1927).

— Type: Bolivia, Canamonia, 15.VII.1922, H.H. Rusby 80 (holo-, NY[NY00319276]!) .

Jacquemontia laxiflora O’Donell , Lilloa 30: 14 (1960).

— Type: Argentina, Misiones, Dep. San Ignacio, Puerto Nuevo, 12.III.1946, G.J. Schwartz 2211 (holo-, LIL [ LIL001323 ]! ; iso-, S[S07-4313] photo!) .

SELECTED MATERIAL EXAMINED. — Bolivia. Beni, Gral , 22.VI.1995, J.Bederrama 582 (SP) . Canamina, VII.1922, H.H. Rusby 80 (K, NY).

Brazil. Amapá, Macapá , 20.VIII.1982, B.V. Rabelo et al. 1672 (ULM). — Bahia, Conde , 22. 6VI2003, G. Hatschbach et al. 75615 (MBM). — Ceará, Barbalha , 23.V.2011, E.M. Marreira et al. 181 (HUEFS). — Distrito Federal, Brasília , 15.II.1994, G. Pereira-Silva 2266 (CEN, SP). — Espiríto Santo, Conceição da Barra , 9.VI.2003, G. Hatschbach et al. 75050 (MBM). — Goiás, Formosa , 11.X.1965, H.S. Irwin & R.R. Santos 9146 (NY, SP, UB). — Mato Grosso, Aquidauana , 18.VII.1969, G. Hatshbach & O. Guimarães 21978 (MBM). — Mato Grosso do Sul , Paranaíba , 1.III.1981, L. Oliveira 28 (UEC) ; Minas Gerais, Santana do Riacho , 28.I.1990, R.S. Bianchini 11705 (SPF). — Pará, Tarapoto , XI.1902, Ule 6569 (MG). — Paraíba, Areia , 12.IX.1944, J.M. Vasconcelos & B.J. Pickel 78 (SP, SPSF). — Pernambuco, Olinda , VI.1925, B. Pickel 967 (SP, SPF). — São Paulo, Pedregulho , 22.III.2004, D. Sasaki & M.F.A. Calió 999 (SPF).

Guyana. Pirara, 1.I.1841, Schomburgk 370 (P).

Mexico. Oaxaca, Cordillera , 1840, H.G.Galeotti 1359 (BR, G, K, P,W).

Paraguay. Amamby, 24.II.1994, A. Krapovickas & C.L. Cristóbal 45005 (SP, CTES). — Canendiyu, 9.V.1974, P. Arenas 726 (SP, CTES). — Sierra de Maracayú, 2.X.1960, E. Hassler 5694 (K, P).

Peru. 1.I.1839, C. Gay 690 (P).

Venezuela. Bolivar, Sierra Imataca 10.IV.1988 C. Sastre et al. 8549 (P).

DISTRIBUTION. — Widely distributed, occurring in Mexico, throughout Central and South America in Colombia, Peru, Bolivia, Venezuela, Brazil ( Robertson 1971), Guyana and Argentina. It grows in other open, non forested habitats.

REMARKS

Jacquemontia sphaerostigma has herbaceous habit and climbing stems, dense inflorescences and four distinct types of trichomes: stellate 3-radiate with subequal rays; stellate 3-radiate with unequal rays; forked (rarely simple); and glandular trichomes( Fig. 2 ). With the similar indumentum to J. evolvuloides , J.sphaerostigma is distinguished with basis on its umbelliform to corymbiform dichasium, while J. evolvuloides has lax monochasial.

Choisy (1838) observed that Convolvulus sphaerostigma Cav. should be transferred to Jacquemontia but he renamed it as J. hirsuta , creating an illegitimate name. Rusby (1899) subsequently made the correct combination.

We considered Jacquemontia laxiflora as synonym of J.sphaerostigma because slightly lax inflorescence, non-glandular trichomes, and corolla 12-15 mm long are characters also found in some specimens of J. sphaerostigma .

Figures

FIG. 8. — A, B, Jacquemontia evolvuloides (photo: M. Pastore); C, D, Jacquemontia heterotricha (photo: H. Moreira); E, F, Jacquemontia sphaerostigma (photo: H.J.C. Moreira); G, H, Jacquemontia warmingii (photo: A.L.C. Moreira).

FIG. 10. — Isotype of Jacquemontia hirsuta var. pohlii f. racemosa (P03867995).

FIG. 2. — Representative trichomes: A, simple trichome thickened at the base; B, forked trichome with a very short ray; C, 3-radiate trichomes with unequal rays; D, glandular trichome; E, 3-radiate trichomes with equal rays. Scale bars: A, B, C, 0,5 mm; D, E, 0,25 mm.