on this page: Engler's description of Gonatopus - Acknowledgement

Gonatopus boivinii (DECNE.) ENGL.
Gonatopus angustus N. E. BROWN
Descriptions by A. E
NGLER (1908)
from: Das Pflanzenreich. IV. 23 B. (Heft 37 Araceae-Pothoideae). pp. 304;306-308


intro species page

Description of
Gonatopus


top of page

Engler's description of Gonatopus :
(click on the illustration below to view it in screen size)

A. Engler (1908), Das Pflanzenreich. IV. 23 B. (Heft 37 Araceae-Pothoideae). pp. 304; 306-308


Tribus V. Zamioculcaseae Engl.

      Zamioculcaseae Engl. in Nova Acta Acad. nat. cur. XXXIX. n. 3. (1876) 140, in DC. Mon. Phan. II. (1879) 63 et in Engl. u. Prantl, Pflzfam. II. 3. (1887) 116. – Problematicae Schott, Syn. Ar. (1856) 70, Prodr. (1860) 214. – Vide supra p. 20.

7.  Zamioculcas Schott.

      Zamioculcas Schott (...) read Engler's description of Zamioculcas from: Das Pflanzenreich. IV. 23 B. (Heft 37 Araceae-Pothoideae). pp. 304-306

8.  Gonatopus Hook. f.*)

[*) γόνυ = genu, ·πους = pes; petiolus medio geniculo instructus.]

      Gonatopus Hook. f. in Bot. Magaz. (1873) t. 6026; Engl. in DC. Mon. Phan. II. (1879) 208, in Engl. und Prantl, Pflzfam. II. 3. (1887) 117, Pflanzenwelt Ostafr. C. (1895) 131; N. E. Brown in Th. Dyer, Fl. trop. Afr. VIII. (1901) 196. – Zamioculcas Decne. in Bull. Soc. bot. France XVII. (1870) 320 pr. p.

      Flores unisexuales, perigoniati. Flores masculi: Perigonium 4-tepalum, tepalis crassis, subprismaticis, truncatis. Stamina 4; filamenta brevissima dilatata in tubum connata, antherae connectivum superantes, thecis ovato-ellipticis poro apicali dehiscentibus, pollen in farciminulis emittentibus. Pistilla rudimentaria. Flores feminei: Perigonii tepala ovarium arcte includentia. Ovarium ovoideum, in stilum aequilongum infra stigma incrassatum contractum, 2-loculare, loculis uniovulatis, ovula anatropa, funiculo brevi placentae centrali basi affixa. Stigma capitatum. – Herbae Africae orientalis, tubere dilatato instructae. Folium solitarium magnum, proteranthium, cataphyllis lanceolatis inclusum; petiolus teres medio geniculo oblongo instructus, maculis irregulariter annuliformibus, brunneis ut pedunculi hinc inde ornatus; lamina ambitu ovata, 2–3-pinnata, pinnis I. inferioribus 2-pinnatis, superioribus pinnatis. Pedunculus quam folium +/- brevior, cum folio coaetaneus. Spathae extus viridis, intus albidae tubus inflorescentiam [femineam] involvens quam lamina lanceolata acuminata pluries brevior.

Clavis specierum.

A. Pinnae extimae lanceolatae vel elliptico-lanceolatae, basi haud decurrentes1. G. Boivinii.
B. Pinnae extimae lineares vel lineari-lanceolatae, basi distincte decurrentes2. G. angustus.

      1. G. Boivinii (Decne.) Hook. f. in Bot. Magaz. (1873) sub. t. 6026, Engl. l. c.; N. E. Brown in Th. Dyer, Fl. trop. Afr. VIII. (1901) 196. – Zamioculcas Boivini Decne. l. c. – Tuber depressum, usque 1,25 dm diametiens. Cataphylla folio antecedentia lanceolata, membranacea, usque 2 dm longa. Folii petiolus cum costa fere 1 m longus ad geniculum nodosum usque 2 dm longus, fere 2 cm crassus, maculis ex brunneo nigrescentibus, annuliformibus ornatus, lamina 3–4-pinnata, pinnis oppositis infimis a geniculo ultra 1 dm remotis; pinnis I. utrinque 4, infimis circ. 2 dm longis 5–7-jugis, pinnis II. inferioribus impari-pinnatis bijugis; foliolis lanceolatis usque elliptico-lanceolatis, acuminatis, sessilibus vel breviter petiolulatis, fere 1 dm longis, 3,5 cm latis, nervis lateralibus erecto-patentibus nervum collectivum a margine remotum formantibus. Pedunculus fere 3 dm longus ut petiolus maculatus, tenuior, interdum 2 cum folio coaetanei. Spathae tubus subglobosus 2 cm longus, lamina ovato-lanceolata, 1,3 dm longa, 4–5 cm lata, extus luride viridis, lineolis fuscis creberrime striolata, intus pallide straminea. Spadicis 1,3 dm longi inflorescentia feminea circ. 2 cm, mascula 1 dm longa, utraque ex albido lutescens. – Fig. 86.

click to view screen size image (145 kB)

Fig. 86. Gonatopus Boivinii (Decne.) Engl. A Habitus totius plantae. B Foliola. C Spatha et spadix. D Flos [mascula] supra visus. E Tepalum a dorso visum. F Tepalum a latere visum. G Androeceum pistillodium includens. H Idem, longitudinaliter sectum. J Flos [feminea], tepalis 2 destitutus. K Gynoeceum, longitudinaliter sectum. Ovarium, transverse sectum. M Ovulum. – Icon. origin.

      Ost-Afrika: Insel Sansibar (Boivin ex Decaisne, J. M. Hildebrandt – Herb. Berlin); Sansibarküstengebiet: Rabai Hills bei Mombas (Taylor – Herb. Kew); Ost- und West-Usambara, von 150–700 m, in den untern Bergwäldern häufig (A. Engler, im September 1902). Nyassaland: Shire Valley, gegenüber den Fällen von Zedzane (Kirk n. 339 – Herb. Kew), Shire (Buchanan n. 186 – Herb. Kew), Milanji-Berge (Mc Clounie n. 51 ex N.E. Brown).

      Nota. Folio stirpis juvenculae simpliciter pinnata sunt (ex N.E. Brown).

      2. G. angustus N. E. Brown in Th. Dyer, Fl. trop. Afr. VIII. (1901) 197. – Tuber napiforme. Cataphylla 1–1,5 dm longa. Folii petiolus cum costa 0,5–1,5 m longus, lamina tripinnatipartita, partitionibus ultimis vel segmentis linearibus vel lineari-lanceolatis, 3–7,5 cm longis, 3,7–10 mm latis, basi plus minus decurrentibus. Pedunculus 5–7,5 cm longus. Spathae tubus oblongo-ovoideus, 2,5–3 cm longus, lamina oblonga, circ. 7,5 cm longa, 3 cm lata, reflexa. Spadix sessilis quam spatha brevioris pars feminea circ. 2 cm longa, 8 mm crassa, pars mascula cylindrica obtusa circ. 6 cm longa, basim versus attenuata.

      Ostafrika: Sambesigebiet; Abhänge der Berge bei Boruma (Menyharth n. 922 bis).

      Nota. Folium hujus speciei etiam magis quam illud speciei alterius folium Umbelliferae cujusdam in mentem revocat.












Read Engler's description of Zamioculcas


Engler's description of Zamioculcas from: Das Pflanzenreich. IV. 23 B. (Heft 37 Araceae-Pothoideae). pp. 304-306

Acknowledgement

This copy of A. Engler's original article was kindly provided by
Dr. Stephan Schneckenburger, Botanic Garden of the TU Darmstadt, Germany.
HTML version and image editing by Norbert Anderwald.
top of page
intro species page

June 19, 2002
open navigation frame last update:
July 8, 2002

Valid HTML 4.01! (Except table background, which is kept for older browsers, but is provided in CSS as well) Valid CSS!