Traditional subfamily |
Clade |
Species |
Secretory structures |
Location |
Morphology of the secretory structures |
Caesalpinioideae |
Cassia clade |
Cassia fistula
|
Secretory trichomes |
Axis of the inflorescence, base of the floral receptacle and the margins of bracts and bracteoles |
Grouped multicellular trichomes with no apparent distinction between peduncle and head - colleter (Fig. 6A, C) |
Caesalpinioideae |
Caesalpinia clade |
Caesalpinia echinata
|
Phenolic cells and tissues |
Phenolic idioblasts in the mesophyll of bracts, sepals and petals Phenolic epidermis in the sepals |
Voluminous idioblasts with the vacuole filled with phenolic compounds occupying the entire cell volume (Fig. 2C) Phenolic epidermis consistting of less voluminous cells than idioblasts, with the vacuole filled with phenolic compounds occupying the entire cell volume (Fig. 2C) |
Caesalpinioideae |
Dimorphandra p.p. clade |
Dimorphandra mollis
|
Mucilaginous epidermis |
Bract and sepals |
Voluminous cells with thick walls largely consisting of mucilage and a distinct cytoplasm (Fig. 3A, B) |
Phenolic cells and tissues |
Phenolic cells grouped in the subepidermal layers (cortex) of the axis of inflorescence Phenolic epidermis of petals and carpel Phenolic parenchyma (mesophyll) of bracts, sepals, petals and carpel |
The phenolic cells of the axis of the inflorescence, bract, sepals and carpel are voluminous and their vacuoles are filled with phenolic compounds occupying the entire cell volume (Figs. 2E, 3A) Cells of the petal parenchyma and epidermis and of the carpel are more isodiametric and have a smaller vacuole (Figs. 2E, 3A) |
Secretory trichomes |
Axis of the inflorescence |
Usually grouped with a multicellular and multiseriate peduncle narrower than the multicellular secretory head consisting of voluminous cells; presence of phenolic compounds in the cells of the peduncle. |
Caesalpinioideae |
Detarieae clade |
Hymenaea courbaril
|
Secretory cavities |
Mesophyll of sepals and petals |
Secretory cavities with epithelium consisting of a layer of secretory cells delimiting a lumen (Fig. 4A-D). |
Phenolic cells and tissues |
Phenolic epidermis of sepals and petals Phenolic parenchyma of sepals and petals |
The phenolic cells of the epidermis are more rectangular and smaller than the phenolic cells of the parenchyma (Fig. 3A-D) The phenolic cells of the parenchyma of sepals and petals have a vacuole filled with phenolic compounds and are more voluminous when located close to the secretory cavities (Fig. 3A-D) |
Mimosoideae |
Mimosoideae clade |
Calliandra brevipes
|
Phenolic cells and tissues |
Phenolic cells grouped in the subepidermal layers of the abaxial surface of bract, sepals and petals Phenolic parenchyma of the cortex and medulla of the axis of the inflorescence |
Voluminous phenolic cells with a vacuole filled with phenolic compounds in the subepidermal layers of the abaxial surface of bract, sepals and petals (Fig. 2D) Phenolic epidermis consisting of rectangular cells smaller than the cells of the subepidermal layers Parenchymal cells with a vacuole filled with phenolic compounds, more voluminous in the medulla than in the cortex (Fig. 2F) |
Secretory trichomes |
Axis of the inflorescence, bract, margins of sepals and petals |
Trichomes with a multicellular and uniseriate peduncle narrower than the multicellular secretory head with more voluminous cells; phenolic compounds present in the vacuole of cells of the peduncle and head (Fig. 4A, B) |
Mimosoideae |
Mimosoideae clade |
Inga bella
|
Secretory trichomes |
Margins of bract and sepals |
Trichomes with a multicellular and uniseriate peduncle narrower than the secretory head, which is also multicellular (Fig. 5C, D) |
Mimosoideae |
Mimosoideae clade |
Mimosa lewisii
|
Mucilaginous epidermis |
Sepal |
Voluminous cells with thick walls largely consisting of mucilage and a distinct cytoplasm (Fig. 3C-F) |
Phenolic cells and tissues |
Phenolic cells in the mesophyll of the axis of the inflorescence, bract, sepal and carpel Phenolic epidermis of the sepals |
Voluminous phenolic idioblasts with a vacuole filled with sparse phenolic compounds in the mesophyll of the sepal (Fig. 3D) Phenolic cells grouped in the subepidermal layers of the bract Phenolic epidermis on the abaxial surface of the sepal consisting of voluminous cells with a vacuole filled with phenolic compounds (Fig. 3E, F) |
Secretory trichomes |
Axis of the inflorescence and bract |
Large secretory trichomes with a robust peduncle and a small head; peduncle with accumulation of phenolic compounds (Fig. 5E, F) Secretory trichomes of phenolic compounds, with no apparent distinction between peduncle and head - colleter (Fig. 6F) |
Mimosoideae |
Mimosoideae clade |
Tetrapleura tetraptera
|
Secretory trichomes |
Base of the flower bud |
Trichomes with a multicellular and multiseriate peduncle narrower than the multicellular secretory head and with more voluminous cells; phenolic compounds present in the vacuoles of the cells of the peduncle (Fig. 5G, H) |
Papilionoideae |
Papilionoideae clade |
Leptolobium elegans
|
Secretory trichomes |
Axilla of the bracts, bracteoles and axis of the inflorescence |
Grouped multicellular trichomes with no apparent distinction between peduncle and head - colleter (Fig. 6B) |
Papilionoideae |
Papilionoideae clade |
Erythrina speciosa
|
Phenolic cells |
Mesophyll of the sepals and stamen filament |
Sparse and non-voluminous idioblasts close to the vascular bundles |
Secretory trichomes |
Sepals |
Trichomes with a multicellular and uniseriate peduncle with no apparent distinction from the more voluminous multicellular secretory head |
Papilionoideae |
Papilionoideae clade |
Gliricidia sepium
|
Phenolic cells |
Mesophyll of the axis of the inflorescence, sepals and carpel |
Sparse and very voluminous idioblasts with a vacuole filled with phenolic compounds occupying the entire cell volume (Fig. 2B) |
Secretory trichomes |
Axis of the inflorescence, base of the flower bud |
Multicellular trichomes with no apparent distinction between peduncle and head - colleter (Fig. 6E) |
Papilionoideae |
Papilionoideae clade |
Indigofera lespedezioides
|
Secretory trichomes |
Axilla of the bracts, bracteoles and axis of the inflorescence |
Grouped multicellular trichomes with no apparent distinction between peduncle and head - colleter |
Papilionoideae |
Papilionoideae clade |
Mucuna urens
|
Phenolic cells |
Mesophyll of the sepals and stamen filament |
Non-voluminous phenolic idioblasts close to the vascular bundles |
Secretory trichomes |
Base of the flower bud and sepals |
Trichomes with a multicellular and uniseriate peduncle narrower than the multicellular head |
Papilionoideae |
Papilionoideae clade |
Platycyamus regnellii
|
Phenolic cells |
Mesophyll of the sepals, stamen filament and carpel |
Non-voluminous phenolic idioblasts close to the vascular bundles |
Secretory trichomes |
Bract, sepals and carpel |
Trichomes with a multicellular and uniseriate peduncle narrower than the multicellular head - colleter (Fig. 6D) |
Papilionoideae clade |
Tipuana tipu
|
Phenolic cells |
Mesophyll of the sepals, petals, filament thread and carpel wall |
Sparse and very voluminous idioblasts with the vacuole filled with phenolic compounds occupying the entire cell volume and concentrated close to the vascular bundles or in the subepidermal layers of the sepals (Fig. 2A) |