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Fig. 1 | Botanical Studies

Fig. 1

From: Nutlet micromorphology and character evolution of Lappula species (Boraginaceae) and its systematic implications

Fig. 1

Six types of nutlet morphology in the studied species. ah = Type I; (a-d) Heterocaryum rigidum; a, b: An overview photograph of nutlet with stereomicroscope and SEM. c, d: The close-up views of the nutlet disk with “papilla verrucose with verrucae minutely muricate”. (e–h) Pseudolappula siniaca; e, f: An overview photograph of nutlet with stereomicroscope and SEM. g, h: The close-up views of the nutlet disk with “papilla with aggregate verrucose in the center”. i-o Type II. (i, j) Lappula. barbata; (k, l) Lappula. Microcarpa; (The more detail of these two species were described between different specimens in Fig. 3). Lappula semiglabra m, n: An overview photograph of nutlet with stereomicroscope and SEM. o: The close-up views of the nutlet disk. p–v = Type III; (p–r) Rochelia sessiflora; p, q: An overview photograph of nutlet with stereomicroscope and SEM. r: The close-up views of the nutlet disk with prickles and verrucose on it. (s-v) Rochelia disperma s, t: An overview photograph of nutlet with stereomicroscope and SEM. u, v: The close-up views of stellare-aculeate emergencies in nutlet disk. w-ac = Type IV; (w–y) Lappula spinocarpus; w, x: An overview photograph of nutlet with stereomicroscope and SEM. y: The close-up views of the nutlet disk with papilla with flowerlike verrucose on it. (z–ab) Lappula ceratophora z, aa: An overview photograph of nutlet with stereomicroscope and SEM. ab: The close-up views of the nutlet disk with papilla appear as a verrucose-like on it. ac–af = Type V; Asperugo procumbense; ac–ad: the overview photograph of nutlet with stereomicroscope and SEM. af: The close-up views of the nutlet disk with papilla appear as dome-shape on it. ag–aj = Type VI; Myosotis sylvatica; ag–ai: the overview photograph of nutlet with stereomicroscope and SEM. aj: The close-up views of the nutlet disk with a smooth surface

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