The main analytical method used in the study of VOCs is gas chromatography combined with a mass spectrometer (GC-MS). The analysis of volatile profiles of plants remains a relevant method due to its simplicity and the considerable contribution of data, which allows to differentiate species between them as well as individuals within the same species [5]. Regarding isolation methods for volatile compounds, they can be divided into three categories: steam distillation, solvent extraction, and headspace trapping [7]. Steam distillation and solvent extraction are time-consuming methods requiring the use of large quantities of solvents and can lead to the formation of artifacts either by isolating non-volatile matter from the tissue or by heat-produced re-arrangement [8]. Therefore, soft extraction methods such as headspace trapping are increasingly being used. Headspace solid phase microextraction (HS-SPME) is a widely used method for the extraction of volatile compounds from flowers [9]. It allows the extraction, concentration, and introduction of analytes into the GC inlet in a single step. It is a fast technique, which does not require the use of organic solvents and is characterized by a reduced operating cost due to the reuse of extraction fibers [10]. In our previous study the HS-SPME/GC-MS method was developed to study the VOCs emitted by the flowers of a _Tillandsia_ species. Following this, two methods were selected and allowed the identification of 30 volatile compounds from the flowers of _Tillandsia xiphioides_ [PERSON] [11]. For the present study, these two methods were used to identify volatile compounds emitted by the flowers of _Tillandsia crocata_ and _Tillandsia caliginosa_. The _Tillandsia_ species belong to the Bromeliaceae family. Most of them are epiphyric. The genus _Tillandsia_ has a very long history of use as a medicinal plant, especially in traditional medicine [12]. Its main chemical constituents belong to several groups, such as flavonoids, triterpenoids, sterols, and phenylpropanoids, which are known to have various important biological activities [12; 13]. However, the volatile composition of _Tillandsia_ has been very little studied, although some species have very fragrant flowers. Among these species, _T. crocata_ [PERSON] has a short stem, distichous leaves quickly forming dense clumps [14] with small yellow or orange flowers. It is known for its very intense floral scent that attracts male Euglossine bees. For this reason, a study was carried out in 1991 to determine the composition of the floral scent of _T. crocata_, which led to the identification of seven volatile compounds [15]. Concerning _T. caliginosa_, it is a plant with a single stem, sometimes branched, carrying long, succulent leaves covered with grayish white scales. Its small but very odorous flowers have a dark brown color. To our knowledge, no study has yet been done on the composition of the VOCs of _T. caliginosa_. The objective of this study is to identify, using the HS-SPME/GC-MS method, the VOCs of fragrant flowers of three species of the genus _Tillandsia_ with different colors and flower shapes. The flowers of these species are presented in Table 1, these are flowers of two forms of _T. xiphoides_ noted low pubescent _xiphioides_ (LP-xiphi) and high pubescent _xiphioides_ (HP-xiphi), respectively, due to a low and high presence of trichomes on the leaves of these plants; two forms of _T. crocata_ are yellow _cocata_ and orange _crocata_ according to the color of the flower, and one form of _T. caliginosa_ presents flowers of dark brown color. A principal component analysis (PCA) was performed to profile the variations of compounds of the different species _T. xiphioides_, _T. crocata_, and _T. caliginosa_. Having shown relatively similar profiles, a second PCA as well as a heatmap were performed to better visualize the differences in profiles of _T. crocata_ and _T. caliginosa_.