(Last Modified On 6/14/2013)
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(Last Modified On 6/14/2013)
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Species
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Baltimora recta L.
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PlaceOfPublication
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Mant. P1. 288. 1771.
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Note
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TYPE: United States, Maryland, near Baltimore, date and collector unknown, cultivated in Botanical Garden Uppsala (not located)
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Synonym
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Scolospermum baltimoroides Less., Linnaea 5: 152, tab. 2, figs. 19-31. 1830. TYPE: Mexico, "Santa Fe," Jul 1828, Schiede & Deppe 335 (B, holotype, not seen, F, MICH, TEX, US, photos ). Baltimora scolospermum Steetz in Seem., Bot. Voy. Herald 154. 1854, nom. superfl., based on type of Scolospermum baltimoroides Less. Baltimora scolospermnum var. panamensis Steetz in Seem., Bot. Voy. Herald 154. 1854. TYPE: Panama, in savanas," 1846-1869, Seemann s.n. (BM, holotype, not seen; GH, isotype).
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Description
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Herb, to 3 m tall; stems glabrate at base, moderately to markedly strigose toward apex with hairs 0.3 mm long. Leaves broadly to narrowly ovate, 2.5-15 cm long, 1.5-12 cm broad, basally truncate to shortly attenuate, both surfaces weakly to moderately strigose with hairs 0.1-0.3 mm long; petioles 0.8-7 cm long, 0.2-1 mm diam. Inflorescence with heads in racemes or more often in large panicles; peduncles 8-33 mm long, 0.3-0.7 mm diam., strigose with hairs 0.3 mm long. Heads radiate, 7-22 mm across, 5-8 mm tall; involucral bracts 3-6, 3.5-6 mm long, 1.7-2.2 mm wide, the apical margin ciliate with hairs 0.3 mm long, the outer bracts weakly strigose abaxially with hairs 0.3 mm long; receptacle 1 mm diam.; paleas 3.5-4.2 mm long, 0.6-0.8 mm wide; ray florets 3-8, the ligules 3.8-5.5 mm long, 1.2-3.1 mm wide, the tube 1.2 mm long; disc florets 16 or more, the corolla throat 1 mm long, 0.7 mm diam. with lobes 0.5 mm long, the tube 1 mm long, 0.2 mm diam., the anthers 1.7 mm long with truncate appendages, the style 1 mm long, the stigma 1.2-2.2 mm long, the ovary 2.2-4 mm long. Achenes 2.4-3.2 mm long, 1.6-1.9 mm diam., truncate and puberulent; pappus a small crown or cup of tissue. Chromosome number n = 15.
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Habit
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Herb
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Distribution
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Baltimora recta is a weedy species which is found in abundance from Mexico to its southernmost limit in Panama.
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Note
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The achenes of Baltimora show striking variations in the ornamentation of the outer pericarp, ranging from nearly smooth (Fig. 48C) to conspicuously winged (Fig. 48D). It flowers throughout the year.
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Specimen
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CANAL ZONE: Ca. 1 mi from Miraflores, Blum 1856 (FSU, MO). Frijoles, Croat 10381 (MO). Just N of Gamboa gate, D'Arcy & D'Arcy 6000 (MO). Navy Reservation, N of Gamboa, Dressler 3216 (DUKE, MO). Sosa Hill, Duke 4666 (MO). Contractor's Hill, Dwyer & Lallathin 8805 (MMO.) Gamboa, Naval Reservation, Ebinger 486 (MO). Corozal, Greenman & Greenman 5187 (MO). Barro Colorado Island. Kenoyer 593 (US). Ancon Hill, 100-200 m, Killip 12001 (US). Pedro Miguel, King 5234 (UC, US). Ft. Kobbe, King 5239 (UC, US). Near Madden Dam, 50 ft, Lewis et al. 9 (CGH, MO, NY, UC). Pedro Miguel, Piper 5491 (US). Near Gatuncillo, Piper 5632 (US). Near Culebra, 50-150 m, Pittier 2232 (US). Between Corozal and Ancon, 10-30 m, Pittier 6739 (US). Madden Dam, Porterfield s.n. (NY). Vista del Mar, Porterfield s.n. (NY). Sosa Hill, Balboa, Standley 25278 (US), 26451 (GH, US). Chiva Chiva Trail, Miraflores Lake, Tyson 1354 (MO). Near Pacific Saddle Club, Pedro Miguel, Tyson 6283 (FSU, UC). Near Miraflores Lake, White 246 (GH, MO, US). CHIMUQUi: Distrito Guanabano, along Quebrada Guanabano, 0-100 m, Croat 22540 (MO). Ca. 8 mi W of Las Lajas, grassy roadside, D'Arcy 5283 (MO). Outskirts of David, D'Arcy 5289 (MO). Ca. 3 mi above David on way to Boquete, D'Arcy & D'Arcy 6288 (MO). 10 mi W of Puerto Armuelles, Liesner 86 (MO). 4 mi S of Puerto Armuelles, 0-100 m, Liesner 396 (MO). NE of Gualaca, McCorkle C-42 (FSU, UC). 5 km E of Boca del Monte, McCorkle C-74 (NY). COCLE: Ca. 1 mi E of Anton, Blum & Tyson 584 (FSU, MO). Nueva Gorgona, D'Arcy & D'Arcy 6280 (MO). 10 mi E of Nata at Rio Grande, Tyson 5226 (DUKE, FSU). COLON: Portobelo, D'Arcy 4059 (MO). Ca. 1-2 mi N of Colon-Panamat boundary, Lazor & Tyson 3018 (FSU, UC). Between Rio Piedras and Puerto Pilon, Lewis et al. 3208 (DUKE, MO, UC). DARIEN: 0-4 mi up river Sabana from Santa Fe, Duke 4144 (MO). HERRERA: Pese, ca. 50 m, Allen 799 (GH, MO, NY). Pan-Am. Hwy. just E of Rio Conaca, D'Arcy & D'Arcy 6669 (MO). Ocu', Ebinger 1045 (MO). 2 km N of Montijo, McCorkle C-7 (FSU). PANAMA: Near beach at Nueva Gorgona, Duke 4500 (GH). Near Rio Pacora and Chepo Hwy., Duke 5920 (GH, MO). Pacora, Dwyer 1232 (MO, UC). Tocumen, Dwyer 4405 (FSU). Ca. 8 mi S of Goofy Lake, Dwyer 7053 (GH, MO). Laguna de Portala, near Chepo, 50, m, Pittier 4588 (US). Between Rio Pacora and Chepo, Porter et al. 5148 (MO). Tocumen Hwy., ca. 3 mi after the airport, Rivas 14 (DUKE, MO). Nuevo Emperador Hwy., Rodriguez 22 (DUKE, MO). Corozal Road, near Panama, Standley 26826 (US). Macapale Island in Madden Lake, Tyson 5486 (FSU, MO). VERAGUAS: Hills W of Sonat, ca. 500 m, Allen 1066 (GH, MO). Ca. 5 mi NE of La Mesa, Blum & Tyson 638 (FSU, MO,). 2-4 mi E of Santiago, ca. 30 m, Duke 12369 (MO). Santiago, 2 mi from Transisthmian Hwy. toward Atalaya, Dwyer & Kirkbride 7405 (GH, MO, US). 12 mi from Santiago toward Divisa, Dwyer & Kirkbride 7448 (MO, UC). Puerto Mutis, 12 mi S of Santiago, Tyson 5193 (DUKE, FSU, MO).
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