| | 1. Naked axis between staminate and pistillate flowers generally 0; pistillate spike green when fresh, becoming brown, ± 28–36 mm wide in fruit; pistillate stalk 1.5–3 mm, hair-like; stigmas widely lanceolate, generally persistent in fruit; pistillate bractlets 0 |
| T. latifolia |
| | 1' Naked axis between staminate and pistillate flowers generally 1–8 cm; pistillate spike bright yellow-brown to dark brown in flower and fruit, 15–25 cm wide in fruit; pistillate stalk ± 0.5 mm, peg-like; stigmas linear, generally deciduous in fruit; pistillate bractlets ± = or > pedicel hairs |
| |
| | 2. Pistillate spike medium to dark brown; tip of pistillate bractlet dark brown, generally rounded; leaf blade glands 0; sterile ovary green |
| T. angustifolia |
| | 2' Pistillate spike bright yellow- to orange-brown; tip of pistillate bractlet straw-colored to orange-brown, acute to acuminate; base of leaf blade gland-dotted on side facing stem; sterile ovary pale brownish |
| T. domingensis
|