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Petiole anatomical study in some taxa of the genus Alcea (Malvaceae) from Iran Cover

Petiole anatomical study in some taxa of the genus Alcea (Malvaceae) from Iran

Open Access
|Nov 2026
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Figures & tables

Table 1:

Studied taxa with voucher number and collection information.

Tabela 1: Preučevani taksoni s številko vavčerja in podatki o nabirkih.

TaxonHerbarium sheet IDCollectorLocation
A. angulataALUH-26379Pakravan & DarrehshuryTehran: Firuzkuh
A. angulataALUH-26391Pakravan & DarrehshuryRobat-karim Tehran:
A. angulataALUH-26393Pakravan & DarrehshuryTehran: Qom Road
A. glabrata var. glabrataALUH-26436Pakravan & H. MoghadamTehran: 50 km from Bueen Zahra to Eshtehard
A. glabrata var. microcarpaALUH-26372Pakravan & DarrehshuryTehran: 30 km from Karai to Challus
A. hohenackeriALUH-26411Pakravan & DarrehshuryAzarbaijan: 10 km from Oshnavieh to Urmia
A. sachsachanicaALUH-26390Pakravan & H. MoghadamAzarbaijan: Ghushchi pass.
A. kurdica var. kurdicaALUH-26410Pakravan & H. MoghadamKurdestan: 13 km from Kamyaran to Sanandaj
A. kurdica var. kurdicaALUH-26426Pakravan & H. MoghadamAzarbaijan: Tabriz, Bostan-abad to Mianeh
A. kurdica var. kurdicaALUH-26428Pakravan & DarrehshuryFars: Estahban to Shiraz, Mian Kotal
A. kurdica var. kurdicaALUH-26395Pakravan & H. MoghadamHamedan: 3 km from Avaj to Razan
A. kurdica var. laxifloraALUH-26434Pakravan & H. MoghadamTehran: 50 km from Bueen Zahra to Eshtehard
A. kurdica var. laxifloraALUH-26443Pakravan & H. MoghadamKermanshah: Between Khamseh ane Bisotun
A. kurdica var. leiocarpaALUH-26400-Pakravan & H. MoghadamHamedan: Lalehjin
A. rechingeriALUH-26430Pakravan & DarrehshuryFars: Estahban to Shiraz
A. schirazanaALUH-26394Pakravan & DarrehshuryFars: Betweeen Ardakan and Komehr
A. hyrcanaALUH-12440PakravanGilan: Talesh to Kallkhal
A. sulphureaALUH-26378Pakravan & DarrehshuryTehran: 3 km from Darbandsar to Fasham
A. sulphureaALUH-14645DarziTehran: Shemiran
A. taricaALUH-26380PakravanTehran: Damavand, Tar Lake.
A. wilhelminae var. linearilobaALUH-26437Pakravan & H. MoghadamAzarbaijan:15 km from Mianeh to Bostan-abad
A. wilhelminae var. linearilobaALUH-26419Pakravan & H. MoghadamAzarbaijan: Ghushchi pass.
A. wilhelminae var. wilhelminaeALUH-26416Pakravan & H. MoghadamAzarbaijan: Ghotur valley
A. wilhelminae var. wilhelminaeALUH-12435PakravanAzarbaijan: Ardebil to Khalkhal
Figure 3:

Cross sections of Alcea petioles: A: A. hohenackeri, B: A. kurdica var. leiocarpa, C: A. kurdica var. laxiflora, D: A. sachsachanica, E: A. tarica, F: A. rechingeri, G: A. wilhelminae var. lineariloba, H: A. angulata, I: A. sulphurea, J: A. glabrata var. glabrata, K: A. glabrata var. microcarpa, L: A. hyrcana. Scale bars: 300 µm. Avas: additional vascular bundle, cav: cavity, Chl: chlorenchyma, Col: collenchyma, Cut: cuticle, Cvb: continuous vascular bundles, Epi: epidermis, F: phloem fibre, Par: parenchyma, Ph: phloem, svb: small vascular bundle, Xy: xylem.

Slika 3: Prečni prerezi pecljev vrst v rodu Alcea: A: A. hohenackeri, B: A. kurdica var. leiocarpa, C: A. kurdica var. laxiflora, D: A. sachsachanica, E: A. tarica, F: A. rechingeri, G: A. wilhelminae var. lineariloba, H: A. angulata, I: A. sulphurea, J: A. glabrata var. glabrata, K: A. glabrata var. microcarpa, L: A. hyrcana. Merila: 300 µm. Avas: dodatni žilni snop, cav: votlina, Chl: klorenhim, Col: kolenhim, Cut: kutikula, Cvb: neprekinjeni žilni snopi, Epi: povrhnjica, F: floemsko vlakno, Par: parenhim, Ph: floem, svb: majhen žilni snop, Xy: ksilem.

Figure 4:

Cross section of Alcea petioles: A: A. schirazana, B: A. wilhelminae var. wilhelminae, C: A. kurdica var. kurdica, D: A. wilhelminae var. lineariloba, E: A. angulata, F: A. sulphurea, G: A. glabrata var. glabrata, H: A. glabrata var. microcarpa, I: A. hyrcana. Scale bars: 300 µm (A, B, C,), 200 µm (D, E, F, H, J), 60 µm (G). cav: cavity, Chl: chlorenchyma, Col: collenchyma, cry: crystal, Cut: cuticle, cvb: continuous vascular bundle, Epi: epidermis, F: phloem fibre, L.vb: lateral vascular bundle, Par: parenchyma, Ph: phloem, svb: small vascular bundle, Xy: xylem.

Slika 4: Prečni prerezi pecljev vrst v rodu Alcea: A: A. schirazana, B: A. wilhelminae var. wilhelminae, C: A. kurdica var. kurdica, D: A. wilhelminae var. lineariloba, E: A. angulata, F: A. sulphurea, G: A. glabrata var. glabrata, H: A. glabrata var. microcarpa, I: A. hyrcana. Merilo: 300 µm (A, B, C,), 200 µm (D, E, F, H, J), 60 µm (G). cav: votlina, Chl: klorenhim, Col: kolenhim, crystal: kristal, Cut: kutikula, cvb: neprekinjen snop. Epi: povrhnjica, F: floemsko vlakno, L.vb: lateralni žilni snop, Par: parenhim, Ph: floem, svb: majhen žilni snop, Xy: ksilem.

Figure 2:

Different types of trichomes on the petiole of Alcea species. A: simple, B: bifurcate, C & D: glandular, E & F: stellate.

Slika 2: Različne vrste trihomov na listnem peclju vrst v rodu Alcea. A: navadni, B: dvokraki, C in D: žlezni, E in F: zvezdasti.

Figure 5:

Cross section of Alcea petioles: (A): A. schirazana, (B): A. wilhelminae var. wilhelminae, (C): A. kurdica var. kurdica, (D): A. sachsachanica, (E): A. tarica, (F): A. rechingeri, (G): A. hohenackeri, (H): A. kurdica var. leiocarpa, (I): A. kurdica var. laxiflora. Scale bars: 200 µm. cav: cavity, Chl: chlorenchyma, Col: collenchyma, cry: crystal, Cut: cuticle, Epi: epidermis, F: phloem fibre, In ph: internal phloem, L.vb: lateral vascular bundle, Par: parenchyma, Ph: phloem, svb: small vascular bundle, Sth: stellate trichome, Xy: xylem.

Slika 5: Prečni prerezi pecljev vrst v rodu Alcea: (A): A. schirazana, (B): A. wilhelminae var. wilhelminae, (C): A. kurdica var. kurdica, (D): A. sachsachanica, (E): A. tarica, (F): A. rechingeri, (G): A. hohenackeri, (H): A. kurdica var. leiocarpa, (I): A. kurdica var. laxiflora. Lestvice: 200 µm. cav: votlina, Chl: klorenhim, Col: kolenhim, Cut: kutikula, cry: kristal, Epi: povrhnjica, F: floemsko vlakno, In ph: notranji floem, L.vb: lateralni žilni snop, Par: parenhim, Ph: floem, Sth: zvezdasti trihom, svb: majhen žilni snop, Xy: ksilem,

Figure 1.

Details of petiole structure in Alcea wilhelminae var. wilhelminae. Chl: chlorenchyma, Col: collenchyma, Cry: crystal, Cut: cuticle, Epi: epidermis, In ph: internal phloem, Par: parenchyma, V.b: vascular bundle.

Slika 1: Podrobnosti v strukturi listnega peclja pri vrsti Alcea wilhelminae var. wilhelminae. Chl: klorenhim, Col: kolenhim, Cry: kristal, Cut: kutikula, Epi: povrhnjica, In ph: notranji floem, Par: parenhim, V.b: žilni snop.

Table 2:

Anatomical features of petiole in Alcea species.

Tabela 2: Anatomske značilnosti pecljev vrst v rodu Alcea.

charactersParench thick μmNo. CollenCollen thick (μm)T. fib scl.Phlo thick (μm)Xylem thick (μm)Chlorench thick (μm)T. V. B.Add. V, BM.V.BVas. B. patternEpi. Th.Pet sh
Taxa
A. angulata182.3–187.75–791.1–115.274.4–78.337.5–46.1116.8–125.251.2–53.712+10Free bundle Ring25.8–32.6C
A. glabrata var. glabrata170.1–175.84–681.5–93.432.–34.241.9–45.5132.2–135.336.4–38.27-4Free bundle Ring30.1–32.6C
A. glabrata var. microcarpa144.3–146.84–582.7–90.354.9–63.743.4–45.9134.2–136.146.9–487-5Free bundle Ring21.1–23.6T
A. hohenackeri204.2–207.12–356.1–59.443.3–44.5147.5–52.5171.9–174.530.4–31.95-4Free bundle Ring20.6–23.7T
A. hyrcana186.9–187.23–758.9–110.835.6–37.750.7–55.499.8–103.336.9–37.512-2Free bundle Ring26.7–29.8T
A. kurdica var. kurdica200.3–238.34–589.5–94.452.3–80.6556.4–70.7121.9–199.635.6–49.57-5Free bundle Ring28.5–32C
A. kurdica var. laxiflora243.9–2505–697.5–100.263.1–63.263.8–65.7256.6–270.542.5–42.67-4Free bundle Ring31.7–34.3T
A. kurdica var. leiocarpa256.3–270.8487.3–87.745.8–48.163.7–65.7129.9–133.746.2–50.16-4Free bundle Ring22.6–24.7C
A. rechingeri309.8–330.45–699.7–105.466.2–67.463.5–64.2186.9–187.648.8–51.716-10Fused bundle Ring27.8–30.3C
A. schirazana257.6–278.48–9103.9–124.974.7–76.160.2–64.2180.8–18243.7–47.38-6Free bundle Ring30.7–32.2T
A. sachsachanica297.106–7107.3–109.676–85.2360.8–63.1195.8–198.543.8–44.86-4Free bundle Ring28.6–31.5T
A. sulphurea229.6–258.85–6100–103.960.8–82.460.9–63.9160–167.344.5–46.15+1U-shape Free bundle25.8–25.9C
A. tarica201.9–215.75–6104.6–108.287.9–93.351.2–54.3166.6–168.531.2–34.58-5Free bundle Ring22.8–25.5C
A. wilhelminae var. lineariloba190.7–192.43–460.9–81.647.2–47.439.8–39.9107.1–118.861.6–63.76-4Free bundle Ring31.3–37.0T
A. wilhelminae var. wilhelminae294.6–297.64–587.9–102.661.2–66.7555.2–58.2219.7–227.7446.2–87.26-4Free bundle Ring36.8–37.2C

[i] Parench thick: Parenchyma thickness, No. Collen: Number of collenchyma layers, No. Chloren: Layer number of Chlorenchyma, T. fi. Scl.: Thickness of sclerenchyma fibers, Phlo thick: Phloem thickness, Xylem thick: Xylem thickness, Collen thick: collenchyma thickness, T. V. B.: Total Number of vascular bundles, Add. V, B: Additional vascular bundles, M.V.B: Major vascular bundle, Vas. B. pattern: vascular bundles pattern, Epi. Th.: Epiderm thickness, C: circular, T: triangle, Pet. Sh: Petiole shape, - & +: Presence or absence of additional vascular bundles. The highest value of each trait state is in bold.

Figure 6:

Dendrogram based on quantitative petiole anatomical characters of Alcea species.

Slika 6: Dendrogram, ki temelji na kvantitativnih anatomskih značilnostih pecljev vrst v rodu Alcea.

DOI: https://doi.org/10.3986/hacq-2026-0003 | Journal eISSN: 1854-9829 | Journal ISSN: 1581-4661
Language: English, Slovenian
Page range: 355 - 364
Submitted on: Apr 12, 2025
Accepted on: Feb 14, 2026
Published on: Nov 4, 2026
Published by: Slovenian Academy of Sciences and Arts
In partnership with: Paradigm Publishing Services

© 2026 Maneezheh Pakravan, Azam Javanbakht, published by Slovenian Academy of Sciences and Arts
This work is licensed under the Creative Commons Attribution 4.0 License.