本文報導近來中南半島東部（越南和寮國）大規模野外調查發現的五種球子草屬新種（P. argenteostriata, P. grandiflora, P. nivea, P. nutans, P. retroflexa）與一天門冬科開口箭屬新種（T. theana），並佐以手繪圖描述。上述新種皆為特有種且生長地範圍狹窄。每一新種的敘述資料包含標準的引用模式標本、描述、副模標本（paratype）列表、建議種名詞源、生態學及分佈數據和簡要分類備註。

Five new species of Peliosanthes (P. argenteostriata, P. grandiflora, P. nivea, P. nutans, P. retroflexa) and one species of Tupistra (T. theana) of Asparagaceae (Convallariaceae s.str.) family discovered recently in eastern Indochina (Vietnam and Laos) during extensive field work are described and illustrated. All described species are local endemics with very restricted geographical range. Data for each described species comprise standard citation of type specimens, description, list of paratypes, proposed species epithet etymology, data on ecology and distribution, as well as short taxonomic remarks.