Cinnamomum baitelloanum van der Werff & P. L. R. Moraes. A. Mature 2017, sp. nov.
Creators: name: Moraes, Pedro Luís Rodrigues De
name: Vergne, Matheus Carvalho
name: Werff, Henk Van Der
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Laurales
Lauraceae
Cinnamomum
Cinnamomum baitelloanum

description: Cinnamomum baitelloanum van der Werff & P.L.R.Moraes, sp. nov.   
 Type:— BRAZIL. Espírito Santo: Linhares, Reserva Natural Vale, estrada Flamengo, ao lado da parcela de Jequitibá-rosa, 20 February 2006, fl., D. A Folli 5188 (holotype CVRD!; isotypes HRCB!, HUEFS!, MO!). (Figures 1–4)   
 Diagnosis: — A congeneris americanis foliis congestis domatiis profunde porosis praeditis recedit.   
 Description: —Small trees, to 6 m. Twigs terete, solid, glabrous, rarely with a few appressed hairs; terminal buds densely pubescent with grey, straight, long (larger than 0.3 mm), appressed hairs, the surface largely covered. Leaves clustered with leafless internodes to 10 cm long, often oblong-elliptic to almost oblanceolate, firmly chartaceous, 12–21 × 4.5–6.5 cm, base acute, apex acute or shortly acuminate, margin flat, cord-like thickened, glabrous on both surfaces, the lower surface densely gland-dotted; midrib immersed, secondary veins and tertiary venation faintly raised on the upper surface, midrib raised, secondary veins and tertiary venation weakly raised, but clearly visible on the lower surface; venation tripliveined with the basal pair of veins more strongly developed and inserted at the base of the lamina, distal secondary veins weakly developed, 6–8 on each side, all secondary veins arching up near the margin and weakly loop-connected; domatia present at the base of the lowermost pair of secondary veins as deep pits, clearly visible on the lower and upper leaf surface, margin of the domatia glabrous or with a few hairs; petioles 1.2–2.2 cm, glabrous, shallowly canaliculated. Inflorescences in the axils of leaves, glabrous, to 5 cm, paniculate-cymose, branched from the very base; pedicels 2–4 mm. Flowers white, glabrous, 3.0–3.2 × 2.3–2.8 mm; tepals 6, equal to subequal, 2.1–2.5 × 1.0– 1.5 mm, erect at anthesis, outer 6 stamens glabrous, 1.4–2.3 mm long, 4-locular, the filaments slightly shorter than to as long as the anthers, gradually widened toward the anthers, anthers ovate, 0.8–1.3 × 0.4–0.9 mm, inner 3 stamens 1.4–1.8 mm, dorsally pubescent, the filaments gradually widened toward the anthers, about as long as the anthers, anthers ovate, 0.9 × 0.4–0.5 mm, two large globose glands present at the base of the filaments, stalked, 0.4–0.5 × 0.4–0.6 mm, about as long as the filaments, staminodia of whorl IV present, 0.7–1.5 mm, the broad filament with some hairs, the glabrous tip broadly triangular; pistil glabrous, 1.5–2.0 mm, style slightly longer than to as long as the ovary, 0.8–0.9 mm, ovary ellipsoid, 0.9 × 0.7–0.9 mm, receptacle shallow, glabrous inside. Fruits ellipsoid, 1.5–2.4 × 1.3–1.7 cm, pedicel somewhat thickened, cupule shallow, 7–10 mm diam, tepals persistent.   
 Additional material examined (paratypes): — BRAZIL. Espírito Santo: Linhares, Reserva Natural Vale, estrada Gávea, 29 September 1982, fr., I. A. Silva 349 (CVRD!, HRCB!, HUEFS!, MO!); idem, estrada Flamengo, ao lado da parcela de Jequitibá-rosa, 7 July 2006, fr., L. C. S. Assis 1171 (CVRD!, HRCB!, SPF!); idem, 6 September 2011, ster., P. L. R. de Moraes et al. 3167 (HRCB!).   
 Cinnamomum baitelloanum can be readily recognized by the combination of glabrous pit domatia (also visible on the upper leaf surface as small protuberances), glabrous leaves, densely gland-dotted lower leaf surfaces and clustered leaves.   
 Phenology: —The flowering specimen was collected in February; fruiting specimens were collected in July and September.   
 Etymology: —This species is dedicated to Dr. João Batista Baitello in recognition of his numerous contributions to our knowledge of Lauraceae in Brazil.   
 Conservation status: — Cinnamomum baitelloanum is only known from the Reserva Natural Vale near Linhares, Espírito Santo. Until recently, two individuals of this species were known. One has died, the second one has not been found back. Clearly, Cinnamomum baitelloanum is a rare and local species. However, the Reserva Natural Vale is protected and there is no threat to the forest in the Reserva. Due to the fact that it is a small and inconspicuous tree, it is likely that there are other individuals at the Reserva. Nevertheless, we consider the available data still insufficient to place Cinnamomum baitelloanum into a category, thus we assign it as Data Deficient (DD) based on the IUCN criteria (IUCN 2010).
description: Published as part of Moraes, Pedro Luís Rodrigues De, Vergne, Matheus Carvalho & Werff, Henk Van Der, 2017, Three new species of Lauraceae from the Atlantic rainforest of Brazil, pp. 149-160 in Phytotaxa 316 (2) on pages 150-152, DOI: 10.11646/phytotaxa.316.2.4, http://zenodo.org/record/13699862