Secretory trichomes and colleters are two of the secretory structures whose exudates may cover the body of the plant. Such secretions comprise resins or mucilages which are associated with an array of ecological roles. In Rosaceae, secretory trichomes have been reported for the leaves while colleters associated with leaf teeth. Our study aimed to identify the secretory structures of Rosa lucieae and understand the ecological role played by these glands as interpreted by morphoanatomical and histochemical studies. Samples from developing and fully mature leaves were collected, fixed, and processed according to usual techniques for light and scanning electron microscopy. In R. lucieae, colleters are restricted to the leaf and stipular margins and are associated with the teeth. They present a parenchymatous axis surrounded by a secretory palisade epidermis and usually fall off after the secretory activity is finished. Different from colleters, secretory trichomes are persistent. They present a multicellular secretory head and stalk. They are found at the base of the leaflet, petiolule, rachis, and petiole and occasionally on the stipular and leaf margins. The colleters predominantly secrete mucilages while the secretory trichomes secrete lipids and terpenes, both via cuticle rupture. The secretory activity of colleters is predominant in the leaf primordia, holding leaflets together and protecting meristems and leaves from desiccation, while the secretory trichomes maintain their secretory activity at different stages of leaf development, protecting different regions of the leaf against pathogens and herbivores.

分泌毛和收集器是两种分泌结构，其分泌物可能覆盖植物体。此类分泌物包含与一系列生态作用相关的树脂或粘液。在蔷薇科植物中，据报道叶子有分泌毛状体，而收集器则与叶齿相关。我们的研究旨在确定蔷薇的分泌结构，并通过形态解剖学和组织化学研究来了解这些腺体所发挥的生态作用。根据光学和扫描电子显微镜的常用技术收集、固定和处理来自发育中和完全成熟的叶子的样品。在R. lucieae中，夹头仅限于叶子和托叶边缘，并与牙齿相关。它们呈现出被分泌栅栏表皮包围的薄壁组织轴，并且通常在分泌活动完成后脱落。与收集器不同，分泌毛状体是持久的。它们具有多细胞分泌头和柄。它们存在于小叶、叶柄、轴和叶柄的基部，偶尔也存在于托叶和叶缘。收集器主要分泌粘液，而分泌毛状体则通过角质层破裂分泌脂质和萜烯。收集器的分泌活动在叶原基中占主导地位，将小叶固定在一起并保护分生组织和叶子免于干燥，