TABLE 1 in Morphological, geographic and ecological evidence support a new species of Chusquea subg. Swallenochloa (Poaceae, Bambusoideae, Bambuseae) from Parque Nacional do Caparaó, Brazil

TABLE 1. Comparison of macro- and micromorphological characters, geographic distribution and habitat between Chusquea heterophylla and C. riparia. CZ = costal zone; ICZ = intercostal zone.
CharacterC. heterophyllaC. ripariaHabiterect at the base, inclined to arching slightly at the apexclambering or scandent when young, becoming erect with arching apicesInternode length (cm)3.5–10.512–19Culm leaf persistencepersistentdeciduousCulm leaf blade persistencepersistentdeciduous or persistentBranching patternextravaginalmodified extravaginalSubsidiary branch number12–45(–65)27–98(–140)Foliage leaf sheath shapekeeledterete or slightly keeledFoliage leaf sheath indumentpubescent between the nerves and near the marginspubescent to densely pubescent (glabrous on the old sheaths)Foliage leaf blade abaxial indumentglabrouspubescentFoliage leaf inner ligule length (mm)(0.2–)0.3–10.1–0.3Spikelet length (mm)5.4–7(–7.4)7.5–9.8Glume II length (mm)(0.4–)0.6–1.80.1–0.5Glume II: spikelet length ratio1/12–1/5less than 1/12Glume III length (mm)2.9–4.33.8–7Glume IV length (mm)3.1–4.74–7Lemma length (mm)5.4–6.9(–7.4)7.3–9.8Palea length (mm)5–7.57.8–9.5Silica body shape (CZ)saddle-shapedsaddle-shaped, dumb-bell shaped with the middle portion constricted, or intermediary shapes between bothPrickle apex/base size (CZ)apex as long as the base or longerapex shorter than the baseMicrohair relative size (CZ)3× longer than stomataslightly longer than the stomataMicrohair basal cell/apical cell proportion (ICZ)both cells nearly equal in lengthapical cell 2× the basal cellMacrohair presenceabsentpresentSubsidiary cell papillae inner branch positionhorizontally elongatederectSubsidiary cell papillae (outer branch branching)not rebranchedrebranched or notInterstomatic long cell papillae flanking the stomata (orientation)erect and obliqueerectInterstomatic long cell papillae branching (frequency)oftenrareInterstomatic long cell papillae (arrangement)in two rows or irregularly arrangedin one rowInterstomatic long cell papillae flanking the stomata (shape)conicalroundedDistributionMinas Gerais, Rio de Janeiro and S„o Paulo statesParque Nacional do CaparaóHabitatbroadly distributed in campo de altitude vegetationriverbanks and gallery forests associated with campo de altitude and upper montane forest
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