Stachytarpheta Vahl 1804
Creators: name: Cardoso, Pedro Henrique
name: Neto, Luiz Menini
name: Cabral, Andressa
name: Trovó, Marcelo
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Verbenaceae
Stachytarpheta

description: Identification key for the Brazilian Stachytarpheta with atropurpureous to black corollas
1. Leaves glabrous..................................................................................................................................................................................2
1’. Leaves hairy........................................................................................................................................................................................5
2. Branches puberulous to pubescent; leaves 3-verticillate, blade obovate to rhomboid............................................... S. rhomboidalis
2’. Branches glabrous; leaves opposite, blade ovate, elliptic, oblong, oblong-lanceolate or subrotund .................................................3
3. Shrubs, densely branched; branches woody, resistant, smooth; calyx green throughout..................................................... S. glauca
3’. Subshrubs, unbranched to little branched; branches reed-like, easily flattened, striated; calyx green, atropurpureous at the apex..4
4. Leaves ovate, obovate to subrotund, base cuneate non-amplexicaul ............................................................................ S. integrifolia
4’. Basal leaves oblong, the apical leaves oblong-lanceolate, base cordate and amplexicaul.......................................... S. oblongifolia
5. Leaf blade sparsely strigose; calyx puberulous................................................................................................................. S. puberula
5’. Leaf blade and calyx villose, sericeous, sericeous-strigose, or lanate................................................................................................6
6. Leaf base truncate to slightly cordate.................................................................................................................................................7
6’. Leaf base cuneate ...............................................................................................................................................................................8
7. Leaves ovate to broadly ovate, blade with apex obtuse to round; bracts and calyx lanose........................................... S. glazioviana
7’. Leaves elliptic to broadly elliptic, blade with apex acute to obtuse, apiculate; bracts and calyx sericeous ....................... S. sericea
8. Leaf margins coarsely serrate at the apex; bracts ovate, apex acute; calyx green-grayish.............................................. S. salimenae
8’. Leaf margins crenate-serrate at the apex; bracts oval-triangular to narrowly triangular, apex acuminate to caudate; calyx yellowgreenish...............................................................................................................................................................................................9
9. Leaves ovate to rotund, petiolate, petiole 0.5–1 cm long, smaller leaves present in the same axil; bracts 0.6–0.8 cm long, abaxially puberulous with trichomes concentrated at the base ................................................................................................ S. flavovirescens
9’. Leaves elliptic, sessile, smaller leaves absent in the same axil; bracts 0.9–1.2 cm long, abaxially villose .......................... S. mollis
description: Published as part of Cardoso, Pedro Henrique, Neto, Luiz Menini, Cabral, Andressa & Trovó, Marcelo, 2021, Taxonomic updates in Brazilian Stachytarpheta (Verbenaceae) with atropurpureous to black corollas: Two new species and a new synonym, pp. 167-178 in Phytotaxa 523 (2) on page 176, DOI: 10.11646/phytotaxa.523.2.4, http://zenodo.org/record/5585439