Tillandsia violacea
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Tillandsia violacea

Andrew Flower 2011 violacea/sierrajuarezensis group. PS1668
Derek Butcher violacea
Andrew Flower ... "In 1982 Sue Gardner made T. sierrajuarezensis Matuda a synonym of T. violacea. Not every one agrees! Not the Germans, who distinguish them and point out that T. sierrajuarezensis has a pendant inflorescence and T. violacea has an erect inflorescence. Die Bromeliae 2018(3) p. 146."

Tillandsia violacea Baker, Jour. Bot. London 25: 279. 1887.
Platystachys violaceus Beer, Bromel. 264. 1857; nomen. Based on Andrieux 60 (K, M), Toluca, Mexico, Mexico, Apr 1834.
Tillandsia foliosa sensu Baker in Hemsley, Biol. Centr. Am. 3: 321. 1884 non Grisebach, 1864, nec Martens & Galeotti, 1843.
Tillandsia sierrajuarezensis Matuda, Cact. Suc. Mex. 18:2, fig. 24, 1973. Type: Matuda 38420 (MEXU) treated as a synonym by Gardner 1982 and Espejo 2004 but not Luther or Ehlers.
Desc from S&D p1008
Plant stemless, 6-7 dm high.
Leaves densely rosulate, 3-4 dm long;
Sheaths oblong-ovate, 1 dm long, brown, densely and finely brown-lepidote;
Blades narrowly triangular, attenuate, 2-4 cm wide, firm, densely pale-appressed-lepidote especially beneath.
Scape curved, stout, shorter than the leaves;
Scape-bracts erect or suberect, densely imbricate, foliaceous, lepidote.
Inflorescence pendent, compound with simple branches, cylindric, dense at least toward apex, 4 dm or more long; axis glabrous;
Primary bracts broadly ovate or elliptic, exceeding and enfolding the axillary spikes, roseate, the lower ones with long foliaceous lepidote blades, the upper merely acute;
Spikes suberect to spreading with a stout naked stipe up to 15 mm long, ovate or lanceolate, complanate, 6-8-flowered with a sterile bract at the base, 5-9 cm long, 3-4 cm wide.
Floral bracts erect, imbricate, elliptic, obtuse, ecarinate, 3 cm long, equaling or slightly exceeding the sepals, 4-6 times as long as the internodes but partially exposing the rhachis, coriaceous, when dry deeply wrinkled as if shrunken, roseate, sparsely brown-punctulate-lepidote;
Flowers sessile.
Sepals elliptic, obtuse, coriaceous, even, glabrous, the posterior ones carinate, short-connate;
Petals linear, tubular-erect, 5 cm long, violet;
Stamens and pistil exserted.
Type. Andrieux 60 (holotype K, GH photo; isotype M), Toluca, Mexico, Mexico, Apr 1834.
DISTRIBUTION. Saxicolous and epiphytic, 1350-3100 m alt, Mexico, Guatemala. MEXICO. HIDALGO: Pachuca, 20 Dec 1931, Froderstrom & Hulten 5 (S). VERA CRUZ: Perote, Mar 1927; Reiche 545 (M); Las Vigas, 10 Apr 1957, Foster & Van Hyning 2984 (US); Orizaba, May 1961, Kubisch I (US). PUEBLA: Esperanza, Mar 1908, Purpus 3467 e p (F). MORELOS: Tepoztlan, 8 Jun 1952, Matuda 26361 (MEXU, US). MEXICO: Cerros Tenayo, Sonayo, 27 Ju1 1952, Matuda 26241 (MEXU, US); Ixtapantongo to La Junta, Apr 1954, Matuda 30666 (MEXU, US); Zacualpan, May 1954, Matuda 30706 (MEXU, US); San Rafael, Tlalmanalco, 27 Feb 1966, Rzedowski 21968 (IPMEX, US). GUERRERO: Cerro Teotepec, Tlacotepec, 11 Apr 1963, Rzedowski 16524 (IPMEX, US). OAXACA: Cerro San Felipe, 7 Apr 1898, Conzatti 700 (GH); May 1898, Conzatti & Gonzales 710 (GH); Valle Nacional, 18 Apr 1959, Van Hyning 5972 (US). CHIAPAS: Lake Xalhueche, Comit.1.n, 27 Apr 1936, Nagel 8006 (GH): Pueblo Nuevo, Mar 1950, MacDougall s n (US).

By Gardner 1982
TILLANDSIA VIOLACEA J.G.Baker, Jour. Bot. London 25:279, 1887 (fig. 90). TYPE Andrieux 60 (holotype K, GH photo, isotype M, n.v.) Toluca, Mexico, Mexico 1834.
Synonym: Tillandsia sierrajuarezensis Matuda, Cact. Suc. Mex. 18:2, fig. 24, 1973. Type: Matuda 38420 (MEXU) in humid cloud forest of la cumbre de la Sierra de Juarez,.0axaca, Mexico, at 2,000 to 2,300 meters elev. 1972.
ROSETTE: Spreading, funnelform, impounding, 30 to 60 leaves, rarely offsetting. LEAF: 48 cm long.
BLADE: 25 mm wide, triangular, appressed lepidote, green, slight metallic sheen.
SHEATH: 13 cm long, 84 mm wide, adaxial surface pale brown, abaxial surface brown, color tends to vary between populations.
SCAPE: Elongate, shorter than leaves, stout, deflexed.
SCAPE BRACTS: Imbricate, laminate,
PRIMARY BRACTS: Lowest long laminate, upper apiculate, sheaths of all about equal to and partially enfolding the branches, #26 rose.
INFLORESCENCE: Pinnate, to 30 branches, Internodes between lowest branches distinct in some populations, very short in others, pendent.
BRANCHES: Elliptic, sessile, thick. Large bicarinate sterile bract adjacent rachis.
FLORAL BRACTS: Ovate, convex, imbricate, coriaceus, scattered scales on both surfaces, #26 rose, pigment in dots, 33 mm long, 18 mm wide.
SEPALS: Lance-ovate, membranous with thick midrib, glabrous, green, free, 30 mm long, 10 mm wide, posterior carinate.
PETALS: Weakly spatulate, erect, claw thick, ,#42 lavender with white edges, 51 mm long, 9 mm wide.
FILAMENTS: #42 lavender, 56 and 59 mm long. ANTHERS: 4 mm long, median attachment, pollen yellow, endothel ium yet low.
STYLE: 55 mm long, #42 lavender spots on apex.
STIGMA: #42 lavender, lobes loosely twisted, papillose.
FLOWERING: February - March, midday.
HABITAT: Epiphytic in pine forest in southern Mexico from Chiapas to Michoacan and Veracruz.
ELEVATION: 2,300 meters. Specimens from Oaxaca and Veracruz tend to have shorter internodes between the inflorescence branches and larger primary bract relative to the branches, resulting in a capitate inflorescence. Leaf-sheaths tend to be darker. The variation of these characters within populations makes it difficult to maintain these as distinct species. However, further comparison of specimens from these populations is needed.
Other material examined: MEXICO, Veracruz: Perote, 1957, Foster & VanHyning 2984 (US), Mexico: Cerros Tenayo, Sonayo, 1952, Matuda 26241 (MEXU, US), Michoacan: San Jose de la Cumbre, 1980, Gardner 1377 (US, SEL), Oaxaca: Miahuatlan, 1980, Gardner 1269 (US, SEL).

Ehlers notes 1995
While T. violacea always offsets, has blue flowers, primary bracts enfolding the narrow side of the spike. The plant in the calendar is obviously a plant from Oaxaca, Sierra de San Felipe and Sierra de Juarez. It was described as T. sierrajuarezensis MATUDA. Gardner made the latter to be a syn. of violacea. First I thought this is not right as the differences in the description and in the plants are evident. (In the description of sierrajuarensis it is said spikes are complanate and the floral bracts are carinate, barely exceeding the sepals, but the bracts are said to be 3- 5 cm, sepals 2,5 cm.) Sue Gardner has a description of violacea in her dissertation that seems to be a mixture of both types of plants. Then I started to study a lot of material and found all plants very variable, you find plants with carinate bracts and nearly ecarinate ones. The plants from Sierra Juares have a short and stout infl. the internodes between the spikes are small. But there may not be enough difference to make a species as the description from Matuda is a little poor.

Updated 07/08/19