Stigmatodon Leme, G.K.Br. & Barfuss

Stigmatodon is a genus of the subfamily Tillandsioideae, family Bromeliaceae.
It was named for the tubo-laciniate shaped stigma published in the collaborative multi-locus DNA sequence phylogeny and morphology study and taxonomic revision of the Tillandsioideae subfamily. (Barfuss et al. 2016. Phytotaxa 279(1): 001-097).
Formerly part of the genus Vriesea, all species are all endemic to Southeastern Brazil, where they grow as saxicoles on granite inselbergs and in rocky terrain.
There are 28 recognised species in this genera. (source: Encyclopaedia of Bromeliads)

amadoi
andaraiensis
apparicianus
attenuatoides
belloi
bifidus
brassicoides
costae
croceanus
euclidianus
fontellanus
francae
freicanecanus
funebris
gastinianus
goniorachis
harrylutheri
lancifolius
limae
magnibracteatus
multifoliatus
oliganthus
plurifolius
pseudoliganthus
rosulatulus
sanctateresensis
vellozicolus
zonatus


Stigmatodon Leme, G.K. Br. & Barfuss gen. nov. Phytotaxa 279(1): 001-097. 2016

Diagnosis:—A genere Vriesea Lindl. plantis semper rupestribus in praecipitatibus saxosis nudis; foliis semixeromorphicis vel xeromorphicis, laminis foliorum frequenter anguste triangularo-acuminatis et manifeste lepidotis, coriaceis vel fere, marginibus truncatis; floribus semper nocturnis, odoratis, per anthesin unilateralibus; stigmatis tubo-laciniatis differt.

Type:Vriesea harrylutheri Leme & G.K. Br. {= Stigmatodon harrylutheri (Leme & G.K. Br.) Leme, G.K. Br. & Barfuss}

Description:
Plants epilithic herbs on vertical, bare granitic surfaces, usually forming inconspicuously impounding or rarely non-impounding rosettes, vegetatively propagating by short basal axillary shoots, or sometimes regular-leaved adventitious offsets produced at the old portion of the stem not covered by leaves and monocarpic, occasionally never forming any shoots or offsets and offsets.
Leaves semi-xeromorphic to xeromorphic, densely lepidote;
leaf blades often narrowly triangular-acuminate, coriaceous or subcoriaceous, margins often truncate.
Inflorescence simple and racemose, or compound, once branched and paniculate;
floral bracts coriaceous or subcoriaceous, greenish, pale purplish-castaneous or stramineous at anthesis, sometimes strongly sulcate-rugose even before anthesis; flowers nocturnal, fragrant, distichously arranged, distinctly secund at anthesis.
Sepals symmetric, ecarinate, thickly coriaceous near the base;
petals whitish, pale greenish or pale yellowish, free, obovate or obovate-spathulate, rounded or obtuse and emarginate, forming a campanulate corolla, bearing well developed, long dentate to slenderly acuminate basal appendages;
stamens shorter than the petals, included within or exserted from the corolla, usually with 3 of them disposed in each lateral sides of the corolla, sometimes radially arranged; filaments free;
anthers dorsifixed near the base;
pollen sulcate, exine reticulate, with a sulcus of the complex, insulae type (subtype d);
ovules appendiculate, shorter than or about equalling the ovule proper;
style longer than the ovary, included within or exserted from the corolla;
stigma of the tubo-laciniate type, without papillae or rarely sparsely papillate.
Seeds with an appendage at the basalr end distinctly longer than the seed proper and a short appendage at the apical end.

Distribution:—Endemic to southeastern Brazil.

Etymology:—The name of this new genus comes from the Greek words stigmatis plus odon, the latter meaning tooth, in reference to the irregularly denticulate to laciniate ('toothed') stigma lobe margins.
Note:—18 species.


Updated 02/11/22