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This species is accepted, and its native range is Brazil (Brasília D.F., Goiás).
A specimen from Kew's Herbarium

[KBu]

Harley, R.M. 2015. “Oocephalus lythroides” (Lamiaceae: Ocimeae: Hyptidinae) from the Distrito Federal of Brazil is a new species: Oocephalus grazielae. Kew Bulletin 70: 18. DOI https://doi.org/10.1007/s12225-015-9568-7

Conservation
The Extent of Occurrence of 8,565 km sq., places the species as Vulnerable, while its Area of Occupancy of 112 km sq. places it as Endangered (IUCN 2001). However, as the majority of individuals are situated in the Distrito Federal, which is subject to a rapid extension of new developments, and where the remaining cerrado is therefore under constant threat, it is appropriate to consider it as Endangered, and should be regularly monitored to check reductions in population size and habitat loss.
Distribution
South America: Brazil, Distrito Federal & Eastern Goiás.
Ecology
Flowering Feb. – Sept., fruiting April to Sept. Cerrado, at altitudes between 975 and 1200 m above sea level.
Morphology General Habit
Non-viscous shrub or subshrub with stems few, herbaceous, 30 – 160 cm tall, arising from a well-developed swollen, woody xylopodium; stems branched or unbranched, weakly quadrangular, with the sides sulcate, with a single deep groove in herbarium material, 2.4 – 6 mm diam., often leafless in lower parts, due to leaf-fall, and with the epidermis often exfoliating on older internodes, upper stems villous, with dense, pure white, curved trichomes and many pale yellow stipitate glands, lower parts of stem with indumentum much eroded
Morphology Leaves
Cauline leaves opposite, often overlapping and sometimes weakly imbricate and usually becoming smaller above, petioles 1 – 2 (– 3) mm, lamina 2.1 – 4.4 × 1.5 – 3.2 cm, ovate-elliptic or broadly ovate to rotund, slightly coriaceous, rarely slightly asperous, apex broadly obtuse to rotund, sometimes apiculate, base cordate to rounded, margin obtusely serrate to sub-crenate, with many small teeth, upper surface green with smooth, thickened cuticle and with scattered, short, broad-based, curved and tapering, white trichomes, and sessile, slightly sunken, yellowish, sessile glands, veins camptodromous, paler, not prominent; lower surface paler green, less hairy, with trichomes mainly restricted to the veins, and glands scattered as on upper surface, veins pale, prominent
Morphology Reproductive morphology Flowers
Flowers subsessile or with pedicels < 0.5 mm long, calyx at anthesis 6.3 – 6.5 (– 7.5) mm long, tube 3.2 – 3.6 mm long, cylindrical, membranous, externally densely white-pubescent with long ascending trichomes and sessile glands, internally glabrous, lobes subequal, (2.5 –)3.0 – 4.2 mm long, narrowly triangular, membranous, with very slender apex, externally densely hairy as on tube, internally glabrous at base and then densely hairy, as on outer surface, fruiting calyx with pedicel < 1 mm long, weakly accrescent, 8 – 8.5 (– 9) mm long, cylindrical, crustaceous, tube 4.6 – 5 mm long, calyx lobes 3.3 – 3.6 mm long, erect or slightly curving outwards to patent, with calyx throat gaping
Morphology Reproductive morphology Flowers Corolla
Corolla pale purplish or rarely white, without markings, tube 8 – 9.5 mm long, 0.7 mm diam. near base, 1.4 mm diam. below throat, externally glabrous basally, upper half with slender, often gland-tipped, patent hairs and scattered sessile glands, internally glabrous, with very small stipitate or stalked glands near throat, corolla lobes very small; stamens with filaments hairy, slightly winged, anthers dark; gynoecium glabrous, stylopodium absent, style with a row of long, sparse, slender, spreading hairs along its length, stigma lobes very short, ± rotund, slightly flattened, receptacle equal, not lobed
Morphology Reproductive morphology Fruits
Nutlets 1.8 – 2 × 1.2 – 1.5 mm, ovoid-ellipsoid, sometimes weakly trigonous, with convex outer surface, apex rounded to truncate, dark brown, glabrous, smooth or minutely striatulate due to rows of small cells running parallel to axis, abscission scar pale, pericarp not mucilaginous when wetted
Morphology Reproductive morphology Inflorescences
Inflorescence a terminal thyrse, 2.5 – 7 (– 12) × 2 – 3 cm, usually short, congested simple or branched, grey-green in appearance due to the dense, short, white indumentum, rarely slightly purple-tinged with branches slightly fastigiate, usually very short, and congested Cymules elongate, 9 – 12 mm long and 5 – 7 mm diam., 6 – 8-flowered, bracteoles pale green or often vinaceous-tinged, elongate, appressed, the outer concave, 5.3 – 8.5 × 1.4 – 2.0 mm often overtopping the flowers and enclosing them, outer surface of bracteole rather densely hairy with whitish hairs and sessile glands, inner surface glabrous except towards apex, which is sparsely hairy and with scattered stipitate glands, the inner bracteoles narrowly lanceolate, 6.2 – 7.5 × 0.6 – 1.4 mm, and one or a pair usually subtending each flower
Morphology Reproductive morphology Inflorescences Bracts
Bracts small, 8 – 9 × 4 mm, foliaceous, toothed, green or often vinaceous-tinged, bearing cymules from their axils, peduncles often absent or < 3 mm, rarely longer
Note

Named in honour of Dr Graziela Barroso, formerly Professor of Botany at the Dept of Botany, University of Brasília, and later Researcher at the Jardim Botânico in Rio de Janeiro. Dona Graziela was largely responsible for revitalising plant taxonomy in Brazil and creating a whole generation of modern plant taxonomists.

One of the most distinctive characters of the new species is the presence of unusual, curved, white trichomes on the stems, leaves and in the inflorescence, which reflect transmitted light and shine under the dissecting microscope. Their form appears to be unique in the genus. From Hyptislythroides it can also be distinguished by its less distinctly imbricate leaves, the inflorescence c. 2 − 3 cm broad, usually branched, vs up to c. 1.5 cm broad and only rarely branched in H. lythroides; the cymules 6 – 8-flowered, vs only 3 – 4-fld in H. lythroides; flowers with calyx at anthesis 6.3 – 7.5 mm long, vs 5.0 – 5.5 mm long in H. lythroides; the calyx tube 3.2 – 3.6 mm long, externally densely covered with white trichomes, and the calyx lobes 3.3 – 3.6 mm long, vs the calyx tube 2.0 – 2.2 mm long, externally sparsely hairy with short antrorse trichomes and with sessile and a few shortly stipitate glands, and the calyx lobes 2.8 – 3.3 mm long, in H. lythroides; the calyx throat in H. lythroides with a conspicuous ring of white protruding hairs, which is absent in Oocephalusgrazielae. With regard to O. lythroides, it is hoped that further populations of this rare species may soon be encountered. The material available for study at the present time, probably does not reflect the full range in variation to be found in the species. Especially the range of measurements, which have been made, may require some adjustment, once we have more specimens on which to base them.

Oocephalusgrazielae is also somewhat similar to the recently described Bahian endemic O. rigens Harley (Harley 2014). Apart from their geographical separation, they differ in a number of characters, including the very different form of the hairs, which occur on the stems and inflorescence, including the calyx tubes, of O. grazielae. The leaves of O. rigens are more strongly coriaceous, with the abaxial surface of the lamina grey-tomentose, rather than pale green and with the longer hairs mostly restricted to the veins in O. grazielae. In O. rigens the terminal thyrse is 15 – 20 cm long and interrupted below, unbranched or with a few elongate branches from near the base, compared to the shorter, congested thyrse, 2.5 – 7 (– 12) cm long in O. grazielae, and while the former species has a ring of erect hairs in the calyx throat and a corolla with tube 7 – 8 mm long, O. grazielae lacks a ring of hairs in the calyx tube and has a longer corolla, with tube 8 – 9.5 mm long.

Type
Type: Brazil, Distrito Federal, Brasília, near Palace Hotel, Campo cerrado, 13 May 1966, D. R. Hunt & J. F. Ramos 5465 (holotype UB; isotypes K, SP).

Native to:

Brazil West-Central

Oocephalus grazielae Harley appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jul 1, 2014 Hunt, D.R. [5465], Brazilia Distrito Federal K001040256 Unknown type material
May 14, 2014 Pastore [2563], Brazil K000938402
May 14, 2014 Pastore [2573], Brazil K000938412

First published in Kew Bull. 70(2)-18: 2 (2015)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Kew Bulletin

  • Bentham, G. (1833). Labiatarum genera et species, pp. 62 – 145. Ridgeway & Sons, London.
  • Harley, R. M. & Pastore, J. F. B. (2012). A generic revision and new combinations in the Hyptidineae (Lamiaceae), based on molecular and morphological evidence. Phytotaxa 58: 1 – 58.
  • Harley, R. M. (2014). Four new taxa of Oocephalus (Hyptidinae: Lamiaceae) from Bahia, Brazil. Kew Bull. 69: 9539. (DOI  10.1007/S/2225–014-9539-4).
  • IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission. IUCN, Gland & Cambridge.
  • Pastore, J. F. B., Harley, R. M., Forest, F., Paton, A. J. & van den Berg, C. (2011). Phylogeny of the subtribe Hyptidinae (Lamiaceae tribe Ocimeae) as inferred from nuclear and plastid DNA. Taxon 60 (5): 1317 – 1329.
  • Pohl, J. E. (1832). Translated by M. & E. Amado (1976). Viagem no interior doBrasil: 156. Editora da Universidade de São Paulo, Brazil.

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0