Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
Souza, Alessandro Oliveira De
Cavalcante, Raphael Guarda
Silva, Marcos José Da
Phytotaxa
2022
2022-09-20
565
1
1
82
9CYGC
Conceicao, Queiroz & Lewis (2001: 113)
Conceicao, Queiroz & Lewis
113
2001
[169,968,1093,1120]
Magnoliopsida
Fabaceae
Chamaecrista
Plantae
Fabales
19
20
Tracheophyta
species
anamariae
Type:— BRAZIL. Bahia: Abaíra, distrito de Catolés, Guarda-Mor, 02 May 1999, (fl., fr.), A.S. Conceição287( holotype HUEFS38961!, isotypes HRB!, UFP059817!). (Figs. 7 and 8)
Subshrubs perennial, 30–70 cmtall, erect, cespitose or not. Root nodules absent. Branches brown or blackish, setuloseviscous indumentum and villosule, including stipules, petiole and rachis; non-exfoliating bark. Stipules 3–3.5 × 1.5– 2.5 mm, elliptical, oblanceolate or lanceolate, persistent. Leaves alternate spiral, dense and ascending along the stem; petiole 4–7.5 cmlong; rachis 4–7 mmlong; leaflets 2 pairs of similar size, 0.8–2.6 × 0.3–0.6 cm, linear-oblong or oblanceolate, apex obtuse or apiculate, base cuneate or oblique, cartaceous, concolorous, villosule on both sides; margin entire, flat, sometimes revolute, ciliate; secondary veins 3–4 pairs, inconspicuous and slightly prominent on abaxial surface. Leafy appendix inter-petioluleabsent.Corymbs 2.5–4 cmlong, peduncle 0.5 mm, 7–14 flowers, congested, terminal, erect, main axis straight, setulose-viscous and villous, including pedicel, external surface of bracts, bracteoles and sepals. Bracts 4–5 × 1 mm, linear or lanceolate, persistent. Bracts 3–5 × 0.5 mm, similar to bracts. Buds 4–5 × 3–4 mm, ovoid, apex acute.Flowers 1.5–2.5 × 1–1.5 cm; pedicel 3–4 mmlong, straight and ascending even when fruited; sepals 13–20 × 4–5 mm, elliptical, apex acute or obtuse, yellow-green or with vinaceous macules externally; 4 flat oboval or oblong-oboval petals and 1 falcate-curled inner petal, 1.7–2.5 × 1–1.5 cm, yellow; stamens 10.5– 8 mmlong, anthers not barbulate; ovary 3–4 × 1 mm, villosule and setulose; style 9–12 mmlong, curved in upper third, glabrous. Legumes 2.8–4 × 0.4–0.5 cm, linear-oblong, puberulent and sparsely setulose-viscous, brown. Seeds 5–6, 3–4.5 × 2.3–2.5 mm, rhomboid, blackish.
Etymology:—The epithet attributed to the species honors Dr. Ana Maria Giulietti, a botanist who is passionate about studying the flora of Brazilian rock fields.
Geographical distribution and habitat:— Chamaecrista anamariaeis endemic to the mountain complex of the Catolés region, western portion of Chapada Diamantina, municipality of Abaíra, state of Bahia, where it inhabits rupestrian fields between rocks at altitudes of 1200 to 1313 meters (Fig. 37C). Flowering and fruiting:—collected with flowers and fruits between March and December.
Conservation status:—Species with an Area of Occurrence around 7 km 2with led it be included in Endangered category. However, the Catolés region comprises a permanent reserve in a set of mountains with altitudes above 1000 meters with irregular relief and rocky soils.
Taxonomic history:— Chamaecrista anamariaewas described by Conceição et al.(2001)and positioned in the Ch. subsect. Absusser. Confertaedue to the leaves oriented upwards on the stem with two pairs of leaflets. Souza et al.(2021)positioned Ch. anamariaein Ch. sect. Absussubsect. Absus, while the other species of Ch. sect. Absusser. Confertaewere allocated to Ch. sect. Absussubsect. Viscosa. Morphological characterization:—Although it shares leaves with two pairs of leaflets with most species of subsection Absus, Ch. anamariaecan be easily diagnosed by the following set of characteristics: subshrub habit with single or cespitose stem; branches with whitish villosule indumentum; stipules elliptical or oblanceolate, sometimes lanceolate, 1.5–2.5 mmwide; leaves ascending on the stem with linear-oblong or oblanceolate leaflets 2.5–4 times longer than wide, and corymbs, congested and immersed in the foliage.
Specimens examined:— BRAZIL. Bahia: Abaíra, Catolés, Caminho de Boa Vistaaté o Bicota, 13°19’00”S, 41°51’00”W, 1200m, 02 March 1992, (fl.), B. L . Stannardet al. 51708( NY); ib., Caminho Bicota– serrinha, 18 September 1992, (fl.), W . Ganev1491( NY); ib., Caminho Guarda-Mor – Serrinha, 25 October 1993, (fl.), W . Ganev2413( SPF); ib., Caminho Boa Vistapara o Bicota, 09 July 1995, (fl.), F . França1282( SPF); ib., Serrinha, 31 May 2003, (fl.), A. S . Conceição594( HUEFS); ib., Lagoinhas, 22 July 2003, (fl.), A. S . Conceição662( HUEFS); ib., Catolés, estrada para o Guarda-Mor, 13°18’53.5”S, 41°51’9.9”W, 1313m, 17 December 2017, (fl., fr.), A. O . Souzaet al. 2228b, 2229b( UB, UFG).
1999-05-02
HUEFS
A. S. Conceicao
Brazil
Catoles
Guarda-Mor
Abaira
19
20
HUEFS38961
1
Bahia
holotype
1999-05-02
A, S, HRB
de Catoles
Brazil
Bahia
19
20
HUEFS38961, UFP059817
1
Bahia
isotype
1992-03-02
B, L
Brazil
Abaira
1200
-13.316667
Caminho de Boa Vista
21
-41.85
Catoles
22
23
1
Bahia
1992-09-18
NY, W
Brazil
Caminho Bicota
Stannard
22
23
1
Bahia
[423,1366,554,581]
1993-10-25
NY, W
Brazil
Caminho Guarda-Mor - Serrinha
Ganev
22
23
1
Bahia
1995-07-09
SPF, F
Brazil
Ganev
Bicota
Caminho Boa Vista
22
23
1
Bahia
2003-05-31
SPF, A, S
Brazil
Serrinha
Franca
22
23
1
Bahia
[305,1016,626,653]
2003-07-22
HUEFS, A, S
Brazil
Lagoinhas
Conceicao
22
23
1
Bahia
2017-12-17
HUEFS, A, O
Brazil
Conceicao
1313
-13.314861
Guarda-Mor
1
-41.85275
Catoles
22
23
1
Bahia
UB, UFG
Brazil
Souza
22
23
1
Bahia