Final answer:
Haemophilus influenzae is a small, pleomorphic gram-negative coccobacillus that causes upper respiratory illnesses like pneumonia.
Step-by-step explanation:
The shape of the gram (-) Haemophilus influenza that causes upper respiratory illnesses like pneumonia is a coccobacillus, which is a type of bacteria that possesses characteristics of both cocci (spherical) and bacilli (rod-shaped) bacteria. H. influenzae is a small, pleomorphic gram-negative coccobacillus, meaning that it can vary in shape from round to elongated.