Tectiris M.B.Crespo, Mart.

Crespo, Manuel B., Martínez-Azorín, Mario & Mavrodiev, Evgeny V., 2015, Can a rainbow consist of a single colour? A new comprehensive generic arrangement of the ‘ Iris sensu latissimo’ clade (Iridaceae), congruent with morphology and molecular data, Phytotaxa 232 (1), pp. 448-450 : 448-450

8. Tectiris M.B.Crespo, Mart. -Azorín & Mavrodiev, gen. nov. [ Iris ser. Tectores Rodion., Rod Iris : 194 (1961)]. Type (holotype):— T. tectorum (Maxim.) M.B.Crespo, Mart. -Azorín & Mavrodiev [≡ Iris tectorum Maxim., Bull. Acad. Imp. Sci. Saint-Pétersbourg , sér. 3, 15: 380 (1871)]

Genus notabilis Asiae orientalis ab Iride s. str. praecipue differt foliis longitudinaliter nervosis, 1–5 nervis validis percursis; omnibus segmentis perigonii eroso-undulatis, exterioribus majoribus, erecto-patentibus, nonnunquam subretusis, imberbibus, crista centrali irregulariter dentata, interioribus patentibus vel subpatentibus, vix minoribus, a basi longe unguiculato-canaliculatis; stylis ad margines longe fimbriatis; lamella stigmatica bilobata, lobis subrotundis; capsula subglobosa vel anguste elliptica, pergamacea, subreticulata, breve apiculata, valde angulosa, e apice deorsum a medio valde dehiscente; seminibus atrofuscis, globoso-pyriformibus, nitidis, apiculatis, irregulatiter striatis, arillo albido carnoso parvo instructis. Numerus basicus chromosomatum, p = 8. Species hujus generis praecipue per Indiam septentrionalem, Sinam australem et Japoniam repertae sunt.

Rhizomatous herbs, with perennial aerial structures. Rhizome horizontal, subsuperficial, stout, fleshy, short, nodose, with remains of leaf bases; roots fibrous, slender. Stems aerial, usually with 1–4 long branches in the upper part, solid or ± hollow, rounded or flattened in cross section, bearing several reduced leaves. Leaves isobilateral, in dense basal fans or alternate on stems, broadly ensiform, tapering into a sharp point, prominently 4–5-ribbed, pale to glaucous green, not fetid. Flowers usually terminal or paired on branches, ± long pedicellate. Spathe valves 2–3, herbaceous green, with narrow scariose margin at anthesis, ± rounded at the back. Perigone in 2 rows, not much differing in size and shape, fused in a short tube, widened at the apex; falls erect-patent to subpatent, obovate to

A NEW GENERIC ARRANGEMENT OF IRIS SENSU LATISSIMO

Phytotaxa 232 (1) © 2015 Magnolia Press • 55 elliptic, with undulate-erose margin, patent to slightly reflexed towards apex, sometimes emarginate, ± gradually tapering into a short claw, with central crest of a single row, coloured, ± irregularly dissected, flanked on both sides by three additional pairs of lateral ridges at the base; standards patent, elliptic to narrowly-obovate, with undulate-erose margin, narrowed into a long, canaliculate haft. Stamen filaments free, adnate to the fall bases. Ovary trilocular, with axile placentation. Style filiform, with 3 petaloid branches, less than half longer than falls, each one concealing a stamen; crests short, incurved, with deeply fimbriate or ± deeply dentate margins; stigma bilobed, with broad lobes. Capsule globose-ovoid to cylindric-ovoid, with 6 ribs, trigonous, reticulate-veined, not hidden into spathes, shortly pointed, unbeaked; pericarp papery, usually reticulate-veined. Seeds numerous, angulose, globose-pyriform, apiculate, with small whitish aril; testa hard, with surface irregularly wrinkled, glossy. p = 8. Figs. 3K , 6B , 13D .

It includes 2 species, occurring in the southeastern parts of Asia, from NW India, Nepal and N Myanmar to SE China and Japan (perhaps introduced here) ( Fig. 14B ).

Needed new combinations:— Tectiris milesii (Baker ex Foster) M.B.Crespo, Mart. -Azorín & Mavrodiev, comb. nov. Basionym: Iris milesii Baker ex Foster, Gard. Chron. ser. 2, 20: 231 (1883). Tectiris tectorum (Maxim.) M.B.Crespo, Mart. -Azorín & Mavrodiev, comb. nov. Basionym: Iris tectorum Maxim., Bull. Acad. Imp. Sci. Saint-Pétersbourg , sér. 3, 15: 380 (1871) [ Evansia tectorum (Maxim.) Klatt in Abh. Naturf. Ges. Halle 15: 373 (1882)].

Figures

FIGURE 3. Flower morphology: falls, standards and stylar branches in most cases, sometimes with spathe bracts. A) Siphonostylis lazica (photo: Ken Walker); B) Gattenhofia verna (photo: Jim McCormac); C) Pardanthopsis dichotoma (photo: Christy Hensler); D) Belamcanda chinensis, with all tepals subequal and also with fruits (photo: Tom Murphy); E) Iris germanica (photo: Ken Walker); F) Iris acutiloba (photo: Aleksandr Ivanov); G) Iris tigridia (photo: Vladimir Y. Arkhipov); H) Iris bloudowii (photo: Vesa Muurinen); I) Juno planifolia (photo: Mario Martínez-Azorín); J) Evansia japonica (photo: Ken Walker); K) Tectiris tectorum (photo: Ken Walker); L) Junopsis decora (photo: Ken Walker).

FIGURE 6. Carpology. A) Belamcanda chinensis, seeds black, long persistent on the central axis of fruit (photo: Stanislav Doronenko); B) Pardanthopsis dichotoma, seeds shortly winged (photo: Ken Walker); C) Gattenhofia verna var. smalliana, seeds with fleshy raphe and ribbed surface (photo: Ken Walker); D) Tectiris tectorum, seeds glossy, pyriform, apiculate, with inconspicuous aril (photo: Ken Walker); E) Evansia wattii, seeds matte, angulose, with small aril (photo: Dennis Kramb); F) Chamaeiris foetidissima, seeds reddish, persistent on valves of the opened fruit (photo: Ken Walker); G) Chamaeiris halophila, seeds with papery, loose testa (photo: David Pilling); H) Hermodactylus tuberosus, seeds globose with gelatinous aril (photo: Ken Walker); I) Lophiris cristata, seeds with long coiled appendage (photo: Jan Sacks); J) Zhaoanthus speculatrix, seeds with aril withering early as a wing (photo: Ken Walker); K) Phaeiris giganticaerulea, seeds large, flattened, with thickened, corky testa (photo: Robert R. Pries); L) Joniris uniflora, seeds with fleshy raphe vanishing on drying (photo: Robert R. Pries); M) Limniris sibirica, seeds discoidal, without aril, with subcorky testa (photo: Ken Walker); N) Rodionenkoa gracilipes, seeds with fleshy raphe and testa surface pitted (photo: Robert R. Pries); O) Junopsis collettii, seeds oblong with conspicuous whitish aril (photo: Ken Walker); P) Zhaoanthus koreanus, seeds globosecompressed, with fleshy raphe withering early as a wing (photo: Robert R. Pries); Q) Iris hoogiana, seeds with prominent aril and testa surface reticulate-wrinkled (photo: Robert R. Pries); R) Iris pumila, seeds without aril and testa surface reticulate-wrinkled (photo: Steve Hurst); S) Juno bucharica, seeds apiculate with fleshy appendage (photo: Ken Walker); T) Siphonostylis lazica, seeds angulose with testa surface covered with sessile glands (photo: Ken Walker). Scale bars in mm.

FIGURE 13. Habit and floral details. A) Juno persica (Wright 1906: t. 8059); B) Evansia japonica (Redouté 1806: t. 152); C) Junopsis collettii (Hooker 1903: t. 7889); D) Tectiris milesii (Baker 1886: t. 6889).

FIGURE 14. Approximate distribution areas: A) Evansia (yellow); B) Tectiris (red).