Tenellae

Attigala, Lakshmi, Fuentes, Alfredo F. & Clark, Lynn G., 2017, Chusquea sect. Tenellae (Bambuseae, Bambusoideae, Poaceae), a taxonomic revision of a new section from South America, Phytotaxa 324 (3), pp. 239-265 : 246

Key to the species of C husquea sect. Tenellae based on vegetative characters

1. Branch complement of 20–50 branches per node; nodal line dipping markedly below the bud/branch complement......................... ..................................................................................................................................................................................... C. ramosissima

- Branch complement of (3–) 5–24 branches per node; nodal line dipping at most only slightly below the bud/branch complement...........................................................................................................................................................................................................2.

2. Foliage leaf blade base asymmetrical, sometimes strongly so; branch complement of (3–) 5–9 branches per node; western Bolivia.................................................................................................................................................................................. C. ovatifolia

- Foliage leaf blade base + symmetrical or slightly asymmetrical; branch complement of 7–24 branches per node; eastern Brazil, Uruguay, and Misiones, Argentina....................................................................................................................................................3.

3. Foliage leaf sheath summit extension developed on only one side, 0.1–0.4 mm long; foliage leaf inner ligules 0.2–0.3 mm long... ....................................................................................................................................................................................... C. fasciculata

- Foliage leaf sheath summit extensions developed on both sides, strongly unequal, 1–30 mm long; foliage leaf inner ligules 1–40 mm .....................................................................................................................................................................................................4.

4. Foliage leaf blades abaxially glabrous except pubescent at the base on both sides of the midrib; foliage leaf sheath summit extensions densely ciliate; culm leaf juncture of sheath and girdle flat, bearing a ring of cilia, corky ridge absent; foliage leaf outer ligules ca. 0.5 mm long and inner ligules 1–7 mm long....................................................................................................... C. tenella

- Foliage leaf blades abaxially glabrous at the base; foliage leaf sheath summit extensions glabrous; culm leaf juncture of sheath and girdle bearing a small corky ridge, glabrous; foliage leaf outer ligules 0.5–5 mm long and inner ligules 3.5–40 mm long............... ...................................................................................................................................................................................... C. tenuiglumis