2. Teliostachya lanceolata Nees
FIGURE 40 Teliostachya lanceolata Nees in Mart. Fl. Brass. 9: 74. 1847. Several cotypes from Brazil and one from Peru are cited.
Herbs up to 30 cm. high or more; stems ascending, rooting at the lower nodes, subquadrangular (the angles narrowly and obscurely winged), pubescent with appressed or ascending hairs about 0.5 mm. long (the lower portions sparingly pubescent or glabrate); leaf blades lanceolate or narrowly elliptic, up to 6 cm. long and 2.2 cm. wide, obtuse or acute (the tip blunt), narrowed at base, glabrous or the costa and lateral veins (4 or 5 pairs, obscure) sparingly hirtellous, the hairs appressed; petioles up to 1.5 cm. long, winged; spikes termi- nating the branches, narrowly conic, up to 4.5 cm. long, about 1 cm. in diameter at base and 5 mm. near tip; cymes 3- to 5-flowered; bracts subulate (or the lowermost leaflike), up to 6 mm. long and 0.5 mm. wide, 3-nerved (the lateral pair faint), ciliate toward apex with small curved hairs; bractlets setiform, about 5 mm. long, sparingly hirtel- lous; calyx prominently nerved, the margins and nerves beset with scattered straight spreading hairs up to 0.5 mm. long, the posterior segment lanceolate, 5 to 7 mm. long, 1.25 mm. wide, gradually nar- rowed and cuspidate, 5-nerved with the outer pair of nerves marginal, the anterior segments subulate, 4 mm. long, 0.5 mm. wide, 3-nerved with the outer pair of nerves faint and submarginal, the lateral seg- ment subulate, 3.5 mm. long, about 0.25 mm. wide, 1-nerved; corolla white or purplish, 4 mm. long, glabrous without or the lobes sparingly ciliate, pubescent within below insertion of the stamens, filaments glabrous, those of the longer pair 2 mm. long, those of the shorter pair 1.5 mm. long; style 3.5 mm. long, bearing a few hairs toward base; ovary pubescent at tip; capsule 3.5 mm. long, subhexagonal, hirtellous toward tip, the lower half glabrous; seeds flat, yellowish brown, about 1 mm. in diameter.
Wooded river banks usually in damp situations. Brazil, Colombia, Peru.
CHOCÓ: Bank of the Río San Juan, near Andagoya, Killip 35386 (US).
EL VALLE: Between Puente Sofía and Yanaconas, Cuatrecasas 18716 (US). PUTUMAYO: Along the Río San Miguel between the tributaries Río Bermeja and Río Conejo, Cuatrecasas 11044 (US).
VAUPÉS: Along the Río Guaviare, Cuatrecasas 7586 (US),