Abstract
BACKGROUND: The present research work was done to evaluate the anatomical differences among selected species of the family Bignoniaceae, as limited anatomical data is available for this family in Pakistan. Bignoniaceae is a remarkable family for its various medicinal properties and anatomical characterization is an important feature for the identification and classification of plants. METHODOLOGY: In this study, several anatomical structures were examined, including stomata type and shape, leaf epidermis shape, epidermal cell size, and the presence or absence of trichomes and crystals (e.g., prisms, raphides, and druses). Three statistical tools-heat map analysis, correlation analysis, and principal component analysis (PCA)-were used to highlight distinctions and similarities among the species. RESULTS: On both the upper and lower leaf surfaces, polygonal, irregular, and hexagonal epidermal cells with thick cell walls were observed. Three patterns of anticlinal cell walls were detected: curved, straight, and sinuous. Distinct stomatal types were also identified across the different species. For instance, sunken stomata were observed in Kigelia africana and Jacaranda mimosaefolia, while anomocytic stomata were found in Oroxylum indicum, Pyrostegia venusta, Tecoma stans, Tecomella undulata, Mansoa alliacea, Heterophragma adenophylla, Handroanthus impetiginosus, Campsis radicans, and Anemopaegma chamberlaynii. Paracytic stomata were examined in B. callistegioides and Dolichandra unguis-cati. Tabebuia aurea was the only species with Tetracytic stomata. A contiguous type of stomata was only observed in Millingtonia hortensis. This family contained three types of trichomes. Glandular peltate trichomes contained a basal epidermal cell, a very small monocellular stalk and a circular or round multicellular head containing 12 cells arranged in a single circle. Non-glandular trichomes had a thin apex without a head and a pointed end. Branched trichomes contained several arms arising from a common base. CONCLUSION: This anatomical examination, using advanced microscopic techniques, is the first to classify several species that are not listed in the e-flora of Pakistan. Leaf anatomical research has proven valuable in resolving challenging taxonomic issues.
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Claims 16
Claim · model-written summary
Leaf epidermal cells on both upper and lower leaf surfaces were polygonal, irregular or hexagonal with thick cell walls in Bignoniaceae.
- Taxon
- BignoniaceaeBignoniaceaee0
- Organ / stage
- upper and lower leaf surfacese1
- Outcome
- epidermal cellse1
- Qualifier
- polygonal, irregular, and hexagonal epidermal cells with thick cell wallse1
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e1“On both the upper and lower leaf surfaces, polygonal, irregular, and hexagonal epidermal cells with thick cell walls were observed”
Claim · model-written summary
Anticlinal cell walls in Bignoniaceae showed three patterns: curved, straight and sinuous.
- Taxon
- BignoniaceaeBignoniaceaee0
- Outcome
- anticlinal cell wallse2
- Qualifier
- curved, straight, and sinuouse2
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e2“Three patterns of anticlinal cell walls were detected: curved, straight, and sinuous”
Claim · model-written summary
Kigelia africana has sunken stomata.
- Taxon
- Kigelia africana
Kigelia africanae3
- Outcome
- stomatae3
- Qualifier
- sunkene3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“sunken stomata were observed in Kigelia africana and Jacaranda mimosaefolia”
Claim · model-written summary
Jacaranda mimosaefolia has sunken stomata.
- Taxon
- Jacaranda mimosaefolia
Jacaranda mimosifoliae3 - Outcome
- stomatae3
- Qualifier
- sunkene3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e3“sunken stomata were observed in Kigelia africana and Jacaranda mimosaefolia”
Claim · model-written summary
Oroxylum indicum, Pyrostegia venusta and Tecoma stans have anomocytic stomata.
- Taxon
- BignoniaceaeBignoniaceaee0
- Material
- Oroxylum indicum, Pyrostegia venusta, Tecoma stanse4
- Outcome
- stomatae4
- Qualifier
- anomocytice4
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e4“anomocytic stomata were found in Oroxylum indicum, Pyrostegia venusta, Tecoma stans, Tecomella undulata, Mansoa alliacea, Heterophragma adenophylla, Handroanthus impetiginosus, Campsis radicans, and Anemopaegma chamberlaynii”
Claim · model-written summary
Tecomella undulata, Mansoa alliacea and Heterophragma adenophylla have anomocytic stomata.
- Taxon
- BignoniaceaeBignoniaceaee0
- Material
- Tecomella undulata, Mansoa alliacea, Heterophragma adenophyllae4
- Outcome
- stomatae4
- Qualifier
- anomocytice4
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e4“anomocytic stomata were found in Oroxylum indicum, Pyrostegia venusta, Tecoma stans, Tecomella undulata, Mansoa alliacea, Heterophragma adenophylla, Handroanthus impetiginosus, Campsis radicans, and Anemopaegma chamberlaynii”
Claim · model-written summary
Handroanthus impetiginosus, Campsis radicans and Anemopaegma chamberlaynii have anomocytic stomata.
- Taxon
- BignoniaceaeBignoniaceaee0
- Material
- Handroanthus impetiginosus, Campsis radicans, and Anemopaegma chamberlayniie4
- Outcome
- stomatae4
- Qualifier
- anomocytice4
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e4“anomocytic stomata were found in Oroxylum indicum, Pyrostegia venusta, Tecoma stans, Tecomella undulata, Mansoa alliacea, Heterophragma adenophylla, Handroanthus impetiginosus, Campsis radicans, and Anemopaegma chamberlaynii”
Claim · model-written summary
Paracytic stomata were examined in Bignoniella callistegioides, cited in the abstract as B. callistegioides.
Verbatim
e5“Paracytic stomata were examined in B. callistegioides and Dolichandra unguis-cati”
Claim · model-written summary
Dolichandra unguis-cati has paracytic stomata.
- Taxon
- Dolichandra unguis-cati
Dolichandra unguis-catie5 - Outcome
- stomatae5
- Qualifier
- Paracytice5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e5“Paracytic stomata were examined in B. callistegioides and Dolichandra unguis-cati”
Claim · model-written summary
Tabebuia aurea was the only Bignoniaceae species with tetracytic stomata.
- Taxon
- Tabebuia aurea
Tabebuia aureae6 - Outcome
- stomatae6
- Qualifier
- only species with Tetracytice6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e6“Tabebuia aurea was the only species with Tetracytic stomata”
Claim · model-written summary
Millingtonia hortensis was the only species with a contiguous type of stomata.
- Taxon
- Millingtonia hortensis
Millingtonia hortensise7 - Outcome
- stomatae7
- Qualifier
- contiguouse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e7“A contiguous type of stomata was only observed in Millingtonia hortensis”
Claim · model-written summary
Glandular peltate trichomes in Bignoniaceae have a basal epidermal cell, a very small monocellular stalk and a multicellular head of 12 cells in a single circle.
- Taxon
- BignoniaceaeBignoniaceaee0
- Outcome
- Glandular peltate trichomese1
- Qualifier
- a basal epidermal cell, a very small monocellular stalk and a circular or round multicellular head containing 12 cells arranged in a single circlee1
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e1“Glandular peltate trichomes contained a basal epidermal cell, a very small monocellular stalk and a circular or round multicellular head containing 12 cells arranged in a single circle”
Claim · model-written summary
Non-glandular trichomes in Bignoniaceae have a thin apex without a head and a pointed end.
- Taxon
- BignoniaceaeBignoniaceaee0
- Outcome
- Non-glandular trichomese1
- Qualifier
- a thin apex without a head and a pointed ende1
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e1“Non-glandular trichomes had a thin apex without a head and a pointed end”
Claim · model-written summary
Branched trichomes in Bignoniaceae contain several arms arising from a common base.
- Taxon
- BignoniaceaeBignoniaceaee0
- Outcome
- Branched trichomese1
- Qualifier
- several arms arising from a common basee1
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e1“Branched trichomes contained several arms arising from a common base”
Claim · model-written summary
The anatomical examination is the first to classify several Bignoniaceae species not listed in the e-flora of Pakistan.
- Taxon
- BignoniaceaeBignoniaceaee0
- Outcome
- classify several speciese1
- Qualifier
- not listed in the e-flora of Pakistane1
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e1“This anatomical examination, using advanced microscopic techniques, is the first to classify several species that are not listed in the e-flora of Pakistan”
Claim · model-written summary
Leaf anatomical research has proven valuable for resolving challenging taxonomic issues in Bignoniaceae.
- Taxon
- BignoniaceaeBignoniaceaee0
- Outcome
- resolving challenging taxonomic issuese1
Verbatim
e0“anatomical differences among selected species of the family Bignoniaceae”
e1“Leaf anatomical research has proven valuable in resolving challenging taxonomic issues”