Cephalanthus salicifolius Bonpl. (Humboldt and Bonpland 1809: 63)

Romero, Maria Florencia, Gonzalez, Ana Maria & Salas, Roberto Manuel, 2023, Sylvainia, a new monospecific genus within the subtribe Cephalanthinae (Rubiaceae, Naucleeae), Plant Ecology and Evolution 156 (1), pp. 85-111 : 85

publication ID

https://dx.doi.org/10.5091/plecevo.90423

persistent identifier

https://treatment.plazi.org/id/CB12C19A-116D-5B5F-A601-D46757B3C9EA

treatment provided by

by Pensoft

scientific name

Cephalanthus salicifolius Bonpl. (Humboldt and Bonpland 1809: 63)
status

 

5. Cephalanthus salicifolius Bonpl. (Humboldt and Bonpland 1809: 63) View in CoL

Figs 8 View Figure 8 , 9 View Figure 9

Cephalanthus occidentalis var. salicifolius (Bonpl.) A.Gray ( Gray 1884: 29) - Type: same as for Cephalanthus salicifolius .

Cephalanthus occidentalis subsp. salicifolius (Humb. & Bonpl.) Borhidi & Diego ( Borhidi and Diego-Peréz 2008: 75) - Type: same as for Cephalanthus salicifolius .

Cephalanthus peroblongus Wernham ( Wernham 1917: 176) - Type: MEXICO • Tepic; 31 May 1837; Barclay 1193; holotype: BM [BM000606674]; isotype: US [US00130642].

Type.

MEXICO • Crescit juxta Acapulco Mexicanorum, in calidis; Bonpland s.n.; holotype: P [P00135084].

Description.

Shrub or tree up to 6 m tall, much-branched. Stems glabrous, sparsely cover with lenticels. Leaves 2- or 3-verticillate, pseudopetiolate, pseudopetiole glabrous or puberulous, 1-10 mm long; blades narrowly ovate or linear-elliptic, glabrous, base acute, apex acute or acuminate, with a dark colleter at the apex when young, discolorous, 3-14 × 0.6-3 cm; principal lateral veins 8-10 on each side, leaf domatia present as tufts of hair; stipules broadly triangular, tardily deciduous, dark colleters present on the apex and margins, light colleters at the ventral (inner) side, intermingled with numerous trichomes. Inflorescences pedunculate, peduncle 2-5 cm long, bracteate, bracts foliaceous, with dark colleters at the apex and margins, bracteoles spatulate, puberulous, with dark colleters at the apex. Flowers perfect; calyx 4(-5)-lobed, hypanthium cupuliform, glabrous to densely pubescent at the base, 1.7-2.5 mm long, lobes oblong or rounded, pubescent on the external (dorsal) face, densely hairy on the internal (ventral) face, with dark colleters at the apex of the lobes, 0.3-0.6 mm long; corolla hypocrateriform, 4(-5) lobed, 5-12 mm long, on the external side with dark colleters at the interlobular sinuses, lobes obtuse to ovate, internally with a pubescent band, externally glabrous; 0.8-1.5 mm long, tube internally and externally glabrous; stamens 4(-5), filaments filiform, glabrous, anthers subsessile, sagittate; ovary 2-carpellate, 2-locular, each locule 1-ovulate; style filiform, 3-6 mm long; stigma capitate and exserted at flower maturity. Fruits obpyramidal or turbinate, pubescent, 4.5-5 mm long. Seeds 1.2-2.2 mm long; aril 1.5-1.8 mm long.

Distribution.

Cephalanthus salicifolius occurs in El Salvador, Honduras, Mexico (Colima, Chihuahua, Coahuila, Hidalgo, Nayarit, and Morelos), and USA (Texas and Arizona) (Fig. 8 View Figure 8 ).

Habitat and ecology.

Edges of streams, lagoons, or lakes, in flooded and waterlogged areas. Frequently forming dense populations, however, it is usually found scattered or as isolated plants along riverbanks.

Phenology.

It flowers from March to July, and bears fruit in August to December. Flowers or fruits may be found throughout the year on isolated plants, especially in the southernmost populations.

Additional material examined.

EL SALVADOR - Morazán • Rio Sapo , area burnt ca 20 years prior; 13°55 ’47” N, 88°06 ’01” W; 678 m; 25 Mar. 2002; Monro 3808; MO GoogleMaps .

HONDURAS - Choluteca • Common along Rio Pespire , vicinity of Pespire; 15 Mar. 1967; Molina 20620 ; US [ US 02370571]. - El Paraíso • Yuscarán, Aldea El Rodeo , quebrada Las Zarcas , road to Oropolí; 13°53 ’06” N, 86°46 ’47” W; 420 m; 3 May 2000; Molina R. et al. 34926; MO. • El Paraíso, common along river thickets, in pine forest area along fossil deposit of arenal river bed, 3 Kms East of Ojo de Agua ; 25 Feb. 1969; Molina 23361 GoogleMaps ; US [ US 02370569]. - Francisco Morazan • Yaguasire, campo abierto; 10 May 1981; Midence 117 ; US [ US 02370570] • Lempira, Municipio San Miguelito , common along river, pine forest area El Comedero, road to Gracias; 4 Mar. 1969; Molina 24007 ; US [ US 02370567].

MEXICO - Colima • Ruta 110, Colima a Pihuamo , Km 215 a Rio Salado ; 19°11 ’32” N, 103°41 ’45” W; 300 m; 18 Jan. 1982; Lorence et al. 3798; MO GoogleMaps . - Chihuahua • Allende, Valle de Allende, Balneario Ojo de Talamantes ; 26.90°19 ’93” N, 105.45°73 ’49” W; 5400 ft; 29 Aug. 1990; Swagel 272; MO . - Coahuila • Castaños, San Lázaro, near the northern entrance of El Puerto de San Lazaro ; 16 Jun. 1936; Wynd & Muller 118; MO . - Hidalgo • Jojutla ; 31 Aug. 1902; Pringle 9822; SI . - Nayarit • San Blas, 3.8 Km al SE de Tecuitata sobre camino a tierra El Cora , carr. Jalcocotan-Miramar ; 21°26 ’16” N, 105°08 ’13” W; 10 Nov. 1994; Flores F. & Téllez V. 3435; CTES, MEXU GoogleMaps . - Morelos • Cuernavaca ; 16 Jan. 1901; Pringle 8474; SI .

USA - Arizona • Pima Co., Coronado National Forest T 16S, R18E, Sec. 1. Coronado National Forest along Forest Rd. 35, Ash Creek drainage; 32°04 ’36” N, 110°27'W; 1140 m; 12 Sep. 1998; Brant & Stone 3982; MO, UMO GoogleMaps . - Texas • Starr Co., Santa Margarita Ranch, on W side of State Highway 83 via Santa Margarita Road , which branches from highway ca 9 miles N and W of Roma , Bank of Rio Grande ; 26°28 ’34” N, 99°05 ’29” W; 185 ft; 7 Oct. 2017; Yatskievych et al. 17-162; MO, TEX GoogleMaps .

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Gentianales

Family

Rubiaceae

Genus

Cephalanthus

Loc

Cephalanthus salicifolius Bonpl. (Humboldt and Bonpland 1809: 63)

Romero, Maria Florencia, Gonzalez, Ana Maria & Salas, Roberto Manuel 2023
2023
Loc

Cephalanthus peroblongus

Wernham 1917
1917
Loc

Cephalanthus salicifolius

Bonpl. (Humboldt and Bonpland 1809
1809
Loc

Cephalanthus salicifolius

Bonpl. (Humboldt and Bonpland 1809
1809