Derek Butcher 03/20 ... "Rob. I can understand the viridiflora bit but why isn't it T. ixioides ?"
Rob Bower ... "I guess 'cause that's what was on the label when I got it' isn't going to cut it?
Im not good at using those descriptions but I now think its ixioides subsp viridiflora - this is due to - 'more spathulate petals with distinct (rhombic to) elliptic or obovate blades about 7 mm wide' and the 'basal half is rose, reddish to red (Rauh 1979: rosafarbig).' Right?? Is this what you meant? I took a closer look at the pic and the basal part of the flower is rosy."
Peter Tristram ... "It’s straight forward - T. ixioides ssp viridiflora (think ‘80s) became T. jucunda var viridiflora (‘90s +) became T. ixioides ssp viridiflora again sometime. Chris Larson reminded me of that not long back when I erred. Got to keep all of those labels up to date!
There are few clones of this dainty species. There’s the quite smallish form, the original form in my collection, like Rob’s, the medium form like Justin’s, also an oldie, and the form with the very long peduncle ex KK and Holm, more recently imports."
Tillandsia lutea Baker, Handb. Bromel. 198. 1889. Type. Morren Icon (K).
175. T. LUTEA Baker.
Anoplophytum luteum E. Morren (M.D.).
Acaulescent. Leaves 15-20 in a dense rosette, lanceolate-acuminate, 4-5 in. long, ? in. broad above the base, firm in texture, finely lepidote, deeply channelled down the lower part of the face, the lower very spreading. Peduncle longer than the leaves; bract leaves small, linear. Inflorescence a few-flowered simple dense spike; flower-bracts ovate, acute, ¾ in. long. Calyx ½ in. long; sepals lanceolate. Petals fulvous-yellow, half as long again as the calyx.
Hab. Uruguay. Described from Prof. Morren's drawing, made from a plant flowered by M. Jacob-Makoy at Liege, in April, 1880. Introduced by Ruchinger, of Venice, in 1876 (T. lutea and T. canescens Hort.)
Tillandsia ixioides subsp. viridiflora (Rauh) Gouda, comb. et stat. nov. Die Brom 2: 76-79. 2010.
Basionym : Tillandsia jucunda var. viridiflora Rauh (1979). (Rauh, W. 1979. Bromelien-studien I. Neue und wenig bekannte Arten aus Peru und anderen Landern (9. Mitteilung). Trop. Subtrop. Pflanzenwelt 31: 13.)
In 1979 Prof. Werner Rauh described a new Bolivian variety of the Argentinean species Tillandsia jucunda A. Cast. as Tillandsia jucunda var. viridiflora. The main differences are the hanging inflorescences with the green flowers and the more silvery cinereous leaves. Except the green colour of the petals, those characteristics are more typical (see figure ) for the more widespread Tillandsia ixioides Griseb. (Argentina, Bolivia, Paraguay, Uruguay, Brazil), not mentioned in Rauh's description of this new variety.
A closer study of the flower characteristics proves that this variety is closer to T. ixioides than to T. jucunda. That's why a new combination along with a new status is proposed:
Tillandsia jucunda has more brightly coloured, lustrous, nearly glabrous floral bracts (except for the apex) and more or less (2-5 mm) connate sepals that are, in relation to T. ixioides much narrower. The size of its sepals is 16-21 by 7-8 mm and the widest point is just below the middle, making them narrowly ovate to narrowly elliptic.
Tillandsia ixioides as well as T. ixioides subsp. viridiflora have free or sub-free sepals that measure 16-19 by 9-10 mm with the widest point near the base and elliptic margins, making them triangular-ovate.
The petals also differ from T. jucunda, that has flowers, which are similar to the T. tenuifolia group. The petals of T. jucunda are ligulate, the blade not very distinctive and only slightly broader than the claw (about 5 mm wide). Tillandsia ixioides and its new subsp. viridiflora have more spathulate petals with distinct (rhombic to) elliptic or obovate blades about 7 mm wide.
The floral bracts of T. ixioides subsp. ixioides are ochraceous (nearly colourless) at anthesis, to greenish at the base. The basal ones are densely lepidote for most of their parts, the apical ones are glabrescent in the basal half. The petals are bright yellow.
The floral bracts of T. ixioides subsp. viridiflora are mostly ochraceous and densely lepidote in the apical half as in the other subspecies, but the basal half is rose, reddish to red (Rauh 1979: rosafarbig).
The petals are bright green. In general, this new subspecies has slightly larger flowers, but this size can be observed in the more variable type subsp. too and seems to depend on both condition and variation.
For example, we are growing a specimen (Utrecht accession U2005GR01252) from Argentina with an inflorescence longer than 20 cm. The syntype of T. meridionalis Baker, also synonym to T. ixioides subsp. ixioides (Tweedie s.n. (K!), Uruguay), is comparable in size. Tillandsia ixioides var. occidentalis (unofficially used in trade for T. ixioides subsp. viridiflora), is partly based on Venturi, S. 870 (syntype K!) and is a large T. ixioides subsp. ixioides too.
For T. ixioides subsp. viridiflora:
Bolivia (central), W. Rausch 54 (holo HEID), generously donated by the Botanical Garden Heidelberg (see figure 1), used for the type of T. jucunda var. viridiflora by Rauh (HEID104256), no other material is known to me at the moment.
For T. ixioides subsp. ixioides:
Argentina, Salta, C.S. Gouda s.n. (U2002GR01077, see figure 1); Quebrado-forest near Tucuman, alt. 1000 m, W. Rauh 64184 (HEID103569); Northwest, Kauffmann s.n. 30-05-l 989 (U2005GRO1252) originated from Bot. Garden Halle; prov. Tucuman, alt. 550 m, S. Venturi 870 (K!).
Bolivia, prov. Tarija, Entre Rios (Salinas), C.S. Gouda 96-20 (U1996GR01236). Brazil, Rio Grande do Sul, Vila Nova do Sul, BR-290, km 361, collector unknown, (U2008GR00227); collector unknown, originated from Bot. Garden Dresden (U2003GR017l 8). Uruguay, Tweedie s.n. (K!), syntype of T. meridionalis Baker.
Tillandsia jucunda var. viridiflora W. Rauh Bromelienstudien 31 (1979)
A typo distinguenda inflorescentiis valde pendulis et floribus omnino viridibus.
Habitat: Bolivia (locus coll. ignotus).
Holotypus : Rausch 54 = hortus botanicus heidelbergensis BGH 31614, herb. inst. bot system. univ. heidelb. (HEID).
Translated by Butcher.
This new variety, that has already flowered in cultivation several times, differs from the yellow flowered Type (var. jucunda), by its hanging inflorescense and the pure green, not yellow flowers. It came from the Cactus collector W. Rausch, Vienna, under the number 54 (without exact location) collected in central Bolivia and is under cultivation in the Botanical Garden of the University of Heidelberg under the number 31 614.
Plant in clumps, single plants with stems, flowering to 20cm high, leaves numerous, spirally arranged, almost erect, hard.
Leaf Sheath indistinct, roundish, ( 1.5 x 1cm).
Leaf Blade narrow lance like, long acuminate, rolled inwards, 8mm wide at base, both sides dense grey scaled.
Scape hanging, ca. 10cm long, 1.5mm thick.
Scape bracts leaf like, longer than the internodes, grey lepidote, the upper ones with more reddish and more lepidote tip.
Inflorescence hanging, simple, to 5cm long, 1.5cm wide, ca. 5 flowered.
Floral bracts erect, ca. 3 cm long, 1.7cm wide, lance like acuminate, thin membranous, pink coloured, at the bottom glabrous, the tips grey lepidote, not keeled, widely exceeds the sepals.
Sepals 16mm long, lance like acuminate, the posterior ones keeled, thin, pink.
Petals 25mm long, pointed, with broad, blunt, 5mm wide platte and 3mm wide point, bright green Stamens and Style enclosed.
Locality unknown in Bolivia
Type Rausch 54 = BGH31 614 HEID
Consequently, the only known two varieties are:
var. jucunda: Inflorescense ± erect; flowers yellow ( fig. 5)
var. viridiflora Rauh: Inflorescense hanging ( fig. 6); flowers shiny green. Has sometimes been unofficially named in the Nursery Trade as T. ixioides var. occidentalis.
(Note: jucunda var. viridiflora has now been moved to T. ixioides subsp. viridiflora)