Strophanthus boivinii, Corkscrew Flower; Wood shaving flower

Strophanthus boivinii  Baill.
Family: Apocynaceae

Synonyms: Roupellina boivinii (Baill.) Pichon, Roupellina boivinii var. angustifolia (H.Perrier ex Pichon) Pichon, Roupellina boivinii var. boivinii, Roupellina boivinii var. grandiflora (Pichon) Pichon, Strophanthus arboreus Boivin ex Franch., Strophanthus aurantiacus Blondel, Strophanthus boivinii var. angustifolius H.Perrier ex Pichon, Strophanthus boivinii var. grandiflorus Pichon, Strophanthus grevei Baill. 

English: Corkscrew Flower; Wood shaving flower
French: Strophanthus de Boivin

Small deciduous tree; latex yellowish.  Leaves simple, opposite; lamina elliptic, cuneate  at base, margin entire. Flowers in cymes, usually arise in the forks of branches ; flowers yellow-orange turning reddish brown; Corolla tube short, lobes 5, 3-4 cm long and 0.5 cm wide, oblong and twisted.  Stamens 10, attached to the throat of corolla tube. Fruit not observed.
Exotic ; it is found as cultivated plant

All  parts  toxic  when  ingested.  Bark  decoction  drunk  to treat colic, also rubbed for wounds and itch. Aerial parts deoction to treat gonorrhoea and fever. Used to poison dogs and pest animals.

    
5 Published articles of Strophanthus Boivinii
1. Cytotoxic cardenolide glycosides of Roupellina (Strophanthus) boivinii from the Madagascar rainforest
By: Karkare, Sampada; Adou, Eba; Cao, Shugeng; et al.
JOURNAL OF NATURAL PRODUCTS  Volume: 70   Issue: 11   Pages: 1766-1770   Published: NOV 2007

2. Glukoside und Aglykone. 94. Die Glvkoside der Samen von Strophanthus Boivinii Baill
By: SCHINDLER, O.; REICHSTEIN, T.
HELVETICA CHIM ACTA  Volume: 35   Issue: (3)   Pages: 673-686   Published: 1952

3. GLYKOSIDE UND AGLYKONE .93. IDENTIFIZIERUNG VON SUBSTANZ NR-763 AUS STROPHANTHUS SPECIOSUS UND S-BOIVINII ALS STROSPESID (DESGLUCO-DIGITALINUM-VERUM)
By: SCHINDLER, O; REICHSTEIN, T
HELVETICA CHIMICA ACTA  Volume: 35   Issue: 2   Pages: 442-446   Published: 1952

4. GLYKOSIDE UND AGLYKONE .94. DIE GLYKOSIDE DER SAMEN VON STROPHANTHUS BOIVINII-BAILL
By: SCHINDLER, O; REICHSTEIN, T
HELVETICA CHIMICA ACTA  Volume: 35   Issue: 3   Pages: 672-686   Published: 1952

5. GLYKOSIDE UND AGLYKONE .96. MILLOSID, PAULIOSID, STROBOSID UND BOISTROSID - DIE GLYKOSIDE VON STROPHANTUS BOIVINII BAILL .2.
By: SCHINDLER, O; REICHSTEIN, T
HELVETICA CHIMICA ACTA  Volume: 35   Issue: 3   Pages: 730-745   Published: 1952