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Strobilanthes glandulata, a new species of Acanthaceae is described from Sri Lanka. It has been previously misidentified as Strobilanthes lupulina. It is similar to S. lupulina having an inflorescence of heads, funnel-shaped gradually widened corolla, hispids on the stem, and both surfaces of leaves and petioles, but can be easily distinguished fro...
Contexts in source publication
Context 1
... observations were taken according to Nilanthi et al. (2021). The GPS coordination of the collection sites was recorded using GARMIN GPSmap 78s and mapped on floristic map of Sri Lanka using ARC GIS version 10.8.1 ESRI, 2020 (Figure 1). Photographs of important morphological features of fresh specimens and line drawings were prepared. ...
Context 2
... is a threat to this population due to road construction for the Kaluganga project. Therefore, S. glandulata could be classified as Critically Endangered (B1ab, ii, iii, v Hewessa, 6 Nov 1975, Sohmer & Waas 10276 (PDA); half mile north of Pahala Hewessa, 17 Feb 1977. B. & K. Bremer 810 (PDA), RATNAPURA DISTRICT: Kokawatte, Sinharaja Forest, Dec 1893, Trimen S.N. (PDA); Nuwara Eliya District: Gardner in Thwaites C.P. 254 (PDA); Road from Pundaluoya to highway A5 andNuwara Eliya, 26 Dec 1970, Theobald & Krahulik 2818 (PDA). ...
Citations
... Characterizing the morphology of pollen grains is useful in plant systematics and this can further add to the body of knowledge within the genus and family. Little is known on the floral and pollen morphology of B. albostellata, however a substantial amount of work has been done in other species within the family Acanthaceae [38][39][40] and in other species of Barleria. Previous studies have found that members of this genus are pollinated by moths [41,42], or attract various species of butterflies [17]. ...
Barleria albostellata C.B. Clarke (grey barleria, Acanthaceae) is an indigenous shrub to South Africa and has been relatively understudied. This shrub is a valuable medicinal plant with a wide spectrum of antibacterial and anti-inflammatory activities. Detailed studies on the floral and pollen morphology on B. albostellata are rare. This study was conducted to observe the morphology of the flower and pollen grains using stereomicroscopy and scanning electron microscopy (SEM). Morphological observations showed numerous non-glandular trichomes on the bracteoles and bracts of B. albostellata. Three types of trichomes were identified on these structures: I—unicellular, II—multangulate-dendritic branched non-glandular trichomes, and III—capitate glandular trichomes. A taxonomical description of the floral structures using stereo and SEM micrographs is provided. SEM micrographs revealed the pollen grains as globose tricolporate with a rough honeycomb exine, and small granules inside the lumina. The diameter of the pollen grains was 77.53 ± 5.63 μm, whereas the aperture of these grains was 14.31 ± 0.59 µm. This study provides insight into the floral biology of B. albostellata, and the results presented here will add to the body of knowledge and encourage further research on this species.
