| Collector | Henderson, A. |
| Number | 3784 |
| Collected with | Nguyen Quoc Dung & Le Van Tuan |
| Country | Vietnam |
| Subpart | Ha Giang |
| County | |
| Locality | Bach Me District, Du Gia Nature Reserve, disturbed forest on steep slope, limestone soil. |
| Coordinates | |
| Minimum elevation (m) | 650 |
| Maximum elevation (m) | 650 |
| Start date | 2012/03/27 |
| End date | 2012/03/27 |
| Family | Arecaceae |
| Identification | Calamus acanthospathus Griff. |
| Determined by | |
| Identification qualifier | |
| Field notes | Stems 1.7 cm diameter with sheaths. Petioles 3 cm long (much longer on young plants); rachis 58 cm long; pinnae 10 per side of rachis, regularly arranged; flagella present; knees present; ocreas obscure. Partial inflorescence bracts tubular. DNA sample. |
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