Eugenia sect. Schizocalomyrtus (Kausel) Mattos, 2005

Giaretta, Augusto, Lucas, Eve & Sano, Paulo Takeo, 2021, Taxonomic monograph of Eugenia sect. Schizocalomyrtus (Myrtaceae: Myrteae), a group within Eugenia with unusual flowers, Phytotaxa 524 (3), pp. 135-177 : 138

publication ID

https://doi.org/ 10.11646/phytotaxa.524.3.1

DOI

https://doi.org/10.5281/zenodo.5649528

persistent identifier

https://treatment.plazi.org/id/03B5878D-655D-8767-7AC6-0B889EFFF9DB

treatment provided by

Plazi

scientific name

Eugenia sect. Schizocalomyrtus
status

 

Key to the species of Eugenia sect. Schizocalomyrtus

1. Stamens curved in the bud in longitudinal section ( Figure 2B View FIGURE 2 ); staminal whorls extend to two-thirds of the bud length and deeply tearing at anthesis; fruits densely puberulent and crowned by the remnants of the hypanthium with scars left from stamen insertion ............................................................................................................................................... 5. Eugenia longohypanthiata View in CoL

- Stamens straight in the bud in longitudinal section; staminal whorls flat ( Figure 1C View FIGURE 1 ) and not tearing at anthesis or less often tearing slightly; fruits glabrous or sometimes densely puberulent and crowned by the reminiscence of the calyx lobes ........................... 2

2. Calyx lobes apparently free but fused at the base to ca. 1 mm long; fruit crowned by the calyx that tears longitudinally by 1 mm long ..................................................................................................................................................................... 2. Eugenia arvensis View in CoL

- Calyx lobes partially fused to at least 2 mm to completely closed ( Figure 2D, E View FIGURE 2 ); fruits crowned by the calyx that tears evidently, longitudinally or transversely ........................................................................................................................................................... 3

3. Calyx lobes tearing transversely resulting in a calyptra-like structure ( Figure 2F View FIGURE 2 ); fruits usually crowned by the calyx that opens via a calyptra-like structure .............................................................................................................................................................. 4

- Calyx lobes tearing longitudinally resulting in 3–4 lobes; fruits crowned by 3–4 calyx lobes ........................................................ 5

4. Inflorescence thyrsoid, terminal or subterminal; bud closed at the tip leaving an apiculum; bracteoles deciduous after anthesis; ovary with 3–5 ovules per locule ................................................................................................................. 4. Eugenia guanabarina View in CoL

- Inflorescence fasciculiform, terminal or axillary; bud partially fused and nearly closed leaving four vestigial free lobes at the tip ( Figure 2E View FIGURE 2 ); bracteoles persistent after anthesis; ovary with 9–15 ovules per locule ............................... 6. Eugenia neoriedeliana View in CoL

5. Leaves dense puberulent abaxially, persistent; the innermost intramarginal vein 4.5–10 mm from the margin; bud tears irregularly at anthesis in 3–4 lobes; fruits 30–45 mm diam. and crowned by the remnant of the irregular calyx lobes ...................................... ...................................................................................................................................................................... 10. Eugenia vattimoana View in CoL

- Leaves glabrous, pubescent or tomentose abaxially, glabrescent; the innermost intramarginal vein 1.5–5 mm from the margin; bud tears regularly at anthesis in 4 lobes; fruits 7–20 mm diam. and crowned by the remnant of the regular calyx lobes .................... 6

6. Leaves with 5–7 secondary veins, petioles 1.5–5 mm long; bracteoles persistent in the fruit; fruit red when ripe ............................ ..................................................................................................................................................................... 8. Eugenia subterminalis View in CoL

- Leaves with 9–22 secondary veins, petioles 5–18 mm long; bracteoles deciduous before or after anthesis; fruit artropurpureum or yellowish when ripe .......................................................................................................................................................................... 7

7. Bud glabrous outside, calyx lobes equal in size ............................................................................................................................... 8

- Bud puberulent outside, pubescent or tomentose, calyx lobes two unequal pairs in size ................................................................ 9

8. Young leaves glabrous; buds 5–7 × 4–6.5 mm, calyx lobes 2.5–4 × 2.5–3 mm; staminal whorl 4–5 mm diam., rounded ................ .......................................................................................................................................................................... 3. Eugenia dichasiata View in CoL

- Young leaves with trichomes 0.2–0.4 mm long, appressed, glabrescent; buds 9–11 × 8–9 mm, calyx lobes 4–8 × 4–9 mm; staminal whorl 9–10 mm diam., squared .................................................................................................................... 7. Eugenia paradisiaca View in CoL

9. Leaves with secondary veins 11–22 per side; inflorescence rachis 3–30 mm, pubescent, up to one rachis per axil; buds 6–8 × 4.5–7 mm, staminal whorl 4.5 mm diam.; fruits ellipsoid, yellowish when ripe .... ..................................................... 1. Eugenia acutata View in CoL

- Leaves with secondary veins 9–12 per side; inflorescence rachis 0.5–5 mm, puberulent or tomentose, up to two rachises sharing the same axil; buds 3–5 × 2.5–5 mm, staminal whorl 3 mm diam.; fruits globose, artropurpureo when ripe .................................... ............................................................................................................................................................... 9. Eugenia tenuipedunculata View in CoL

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